Airtime getMsisdnInfo added

examples/example-getMsisdnInfo.php

+<?php
+require_once('src/autoload.php');
+
+$oClient = new \CAMOO\Airtime\Airtime('592595095gh57', '4e32da5979879b89479847b9798479494984');
+
+// Retrieve TopUp option for a phone number 
+var_dump($oClient->getMsisdnInfo(237671234567));

src/CAMOO/Airtime/Airtime.php

+<?php
+namespace CAMOO\Airtime;
+/**
+ *
+ * CAMOO SARL: http://www.camoo.cm
+ * @copyright (c) camoo.cm
+ * @license: You are not allowed to sell or distribute this software without permission
+ * Copyright reserved
+ * File: src/CAMOO/Airtime/Airtime.php
+ * updated: Mai 2017
+ * Created by: Epiphane Tchabom (e.tchabom@camoo.cm)
+ * Description: CAMOO Airtime API
+ *
+ * @link http://www.camoo.cm
+*/
+
+use CAMOO\Client;
+
+class Airtime extends Client{
+
+    public function __construct ($api_key, $api_secret) {
+	parent::__construct($api_key, $api_secret, __CLASS__);
+    }
+
+
+     public function getMsisdnInfo($sPhone) {
+	$this->oHttpClient->setResourceName('msisdnInfo');
+	return $this->get(['phone' => $sPhone]);
+
+     }
+
+
+}

src/CAMOO/Authentifications/Credentials.php

+<?php
+namespace CAMOO\Authentifications;
+/**
+ *
+ * CAMOO SARL: http://www.camoo.cm
+ * @copyright (c) camoo.cm
+ * @license: You are not allowed to sell or distribute this software without permission
+ * Copyright reserved
+ * File: src/CAMOO/Authentifications/Credentials.php
+ * updated: Mai 2017
+ * Created by: Epiphane Tchabom (e.tchabom@camoo.cm)
+ * Description: CAMOO API Client
+ *
+ * @link http://www.camoo.cm
+*/
+
+/**
+ * Class Credentials
+ *
+ * @package CAMOO\Authentifications
+ */
+class Credentials
+{
+	public $api_key;
+	public $api_secret;
+
+	/**
+	 * @param $sApiKey
+	 * @param $sApiSecret
+	 */
+	public function __construct($sApiKey, $sApiSecret)
+	{
+		$this->api_key = $sApiKey;
+		$this->api_secret = $sApiSecret;
+	}
+
+	public function toArray() {
+		return (array) $this;
+	}
+}

src/CAMOO/Base.php

+<?php
+namespace CAMOO;
+/**
+ *
+ * CAMOO SARL: http://www.camoo.cm
+ * @copyright (c) camoo.cm
+ * @license: You are not allowed to sell or distribute this software without permission
+ * Copyright reserved
+ * File: src/CAMOO/Base.php
+ * updated: Mai 2017
+ * Created by: Epiphane Tchabom (e.tchabom@camoo.cm)
+ * Description: CAMOO API Base
+ *
+ * @link http://www.camoo.cm
+*/
+
+class Base {
+
+  const DS = '/';
+    protected $sEndPoint = 'https://api.camoo.cm';
+    
+   protected static $_create = null;
+
+   public static function create()
+   {
+       if ( is_null(static::$_create) )
+       {
+           static::$_create = new self;
+       }
+       return static::$_create;
+   }
+
+   protected $oModule = null;
+   protected $ohCredentials = null;
+
+   /**
+     * @param $sApiKey
+     * @param $sApiSecret
+     */
+    public function setCredentials($sApiKey, $sApiSecret)
+    {
+        $this->ohCredentials = new Authentifications\Credentials($sApiKey, $sApiSecret);
+	return $this;
+    }
+
+    public function getCredentials() {
+	    return $this->ohCredentials;
+    }
+   /**
+     * @param $ohCalledClass
+     */
+    public function setModule(\CAMOO\Common\CalledClass $ohCalledClass)
+    {
+	return $this->oModule = $ohCalledClass;
+    }
+
+
+   protected function __clone() {}
+ 
+   /**
+    * constructor
+    *
+    * externe Instanzierung verbieten
+    */
+   protected function __construct() {
+   }
+
+     /**
+     * @var string The resource name as it is known at the server
+     */
+    protected $resourceName = NULL;
+    /**
+     * @param $resourceName
+     */
+    public function setResourceName($resourceName)
+    {
+        $this->resourceName = $resourceName;
+    }
+    /**
+     * @return string
+     */
+    public function getResourceName()
+    {
+        return $this->resourceName;
+    }
+        
+      /**
+      * Target version for "Classic" Camoo API
+      */
+     protected $camooClassicApiVersion = 'v1';
+     /**
+      * Returns the CAMOO API URL
+      *-
+      * @return string
+      * @author Epiphane Tchabom 
+      **/
+     public function getEndPointUrl() {
+         $sUrlTmp = $this->sEndPoint.static::DS.$this->camooClassicApiVersion.static::DS;
+         $sResource = '';
+         if ( $this->getResourceName() !== NULL) {
+         	$sResource = static::DS.$this->getResourceName();
+         }
+         return sprintf($sUrlTmp.$this->oModule->name.$sResource.'%s','.json');
+     }
+
+
+     /**
+      * decode json string
+      * @throw CamooSmsException
+      * @author Epiphane Tchabom 
+      */
+     protected function decode($sJSON, $bAsHash=false) {
+         try {
+             if (   ($xData = json_decode($sJSON, $bAsHash)) === NULL
+                 && (json_last_error() !== JSON_ERROR_NONE) ) {
+                     throw new \CamooSmsException(json_last_error_msg());
+                 }
+         } catch ( \Exception $e ) {
+             return $e->getMessage();
+         }
+         return $xData;
+     }
+}

src/CAMOO/Client.php

+<?php
+namespace CAMOO;
+/**
+ *
+ * CAMOO SARL: http://www.camoo.cm
+ * @copyright (c) camoo.cm
+ * @license: You are not allowed to sell or distribute this software without permission
+ * Copyright reserved
+ * File: src/CAMOO/Client.php
+ * updated: Mai 2017
+ * Created by: Epiphane Tchabom (e.tchabom@camoo.cm)
+ * Description: CAMOO API Client
+ *
+ * @link http://www.camoo.cm
+*/
+
+use CAMOO\Base;
+use CAMOO\Common\CalledClass;
+use CAMOO\Exceptions\HttpClientException;
+
+class Client {
+	protected $oHttpClient;
+	const REQUEST_GET = 'GET';
+	const REQUEST_POST = 'POST';
+
+	public function __construct ($api_key, $api_secret, $sClass=null) {
+		if ( is_null($this->oHttpClient) ) {
+			$this->oHttpClient = (new HttpClients\CamooHttpClient())->setCredentials($api_key, $api_secret);
+			if ( $sClass !== null ) {$this->oHttpClient->setModule(new \CAMOO\Common\CalledClass($sClass));}
+		}
+	}
+
+	public function post($data=[]) {
+		return $this->oHttpClient->performRequest(static::REQUEST_POST, ['form_params' => $data]);
+	}
+
+	public function get($data=[]) {
+		return $this->oHttpClient->performRequest(static::REQUEST_GET, ['query' => $data]);
+	}
+}

src/CAMOO/Common/CalledClass.php

+<?php
+namespace CAMOO\Common;
+/**
+ *
+ * CAMOO SARL: http://www.camoo.cm
+ * @copyright (c) camoo.cm
+ * @license: You are not allowed to sell or distribute this software without permission
+ * Copyright reserved
+ * File: src/CAMOO/Authentifications/Credentials.php
+ * updated: Mai 2017
+ * Created by: Epiphane Tchabom (e.tchabom@camoo.cm)
+ * Description: CAMOO API Client
+ *
+ * @link http://www.camoo.cm
+*/
+
+
+/**
+ * Class CalledClass
+ *
+ * @package CAMOO\Common
+ */
+class CalledClass
+{
+	public $name;
+
+	/**
+	 * @param $sCalledClass
+	 */
+	public function __construct($sCalledClass)
+	{
+		$this->name = $this->getRelativeClassName($sCalledClass);
+	}
+
+	public function toArray() {
+		return (array) $this;
+	}
+
+	private function getRelativeClassName($sClass) {
+	 $asClassExploded = explode('\\', $sClass);
+	  $sModuleName = end($asClassExploded);
+	  return strtolower($sModuleName);
+	}
+}

src/CAMOO/Exceptions/HttpClientException.php

+<?php
+namespace CAMOO\Exceptions;
+/**
+ *
+ * CAMOO SARL: http://www.camoo.cm
+ * @copyright (c) camoo.cm
+ * @license: You are not allowed to sell or distribute this software without permission
+ * Copyright reserved
+ * File: src/CAMOO/Exceptions/HttpClientException.php
+ * updated: Mai 2017
+ * Created by: Epiphane Tchabom (e.tchabom@camoo.cm)
+ * Description: CAMOO API Exception
+ *
+ * @link http://www.camoo.cm
+*/
+
+/**
+ * Class HttpClientException
+ *
+ */
+use Exception;
+class HttpClientException extends Exception {}

src/CAMOO/HttpClients/CamooHttpClient.php

+<?php
+namespace CAMOO\HttpClients;
+/**
+ *
+ * CAMOO SARL: http://www.camoo.cm
+ * @copyright (c) camoo.cm
+ * @license: You are not allowed to sell or distribute this software without permission
+ * Copyright reserved
+ * File: src/CAMOO/HttpClients/CamooHttpClient.php
+ * updated: Mai 2017
+ * Created by: Epiphane Tchabom (e.tchabom@camoo.cm)
+ * Description: CamooHttpClient
+ *
+ * @link http://www.camoo.cm
+*/
+require_once( CAMOO_ROOT_SRC_DIR .'vendor/autoload.php');
+
+use GuzzleHttp\Exception\RequestException;
+use CAMOO\Exceptions\HttpClientException;
+use GuzzleHttp\Client;
+use GuzzleHttp\Psr7;
+use CAMOO\Base;
+
+
+class CamooHttpClient extends Base {
+    const REQUEST_GET = 'GET';
+    const REQUEST_POST = 'POST';
+    const HTTP_NO_CONTENT = 204;
+    const CLIENT_VERSION = '1.2.0';
+    /**
+     * @var string
+     */
+    protected $endpoint;
+
+    /**
+     * @var array
+     */
+    protected $userAgent = array();
+
+    /**
+     * @var int
+     */
+    private $timeout = 10;
+    
+    /**
+    * @var mixed
+    */
+    
+    private $oAuthentication = array();
+    
+    public $ssl_verify = false; // Verify Camoo SSL before sending any message
+    
+    private $oClient = null;
+    private $oResponse = null;
+    private $_WellKownRequestOption = ['query', 'form_params'];
+
+    /**
+     * @var int
+     */
+    private $connectionTimeout = 2;
+
+    /**
+     * @param int $timeout > 0
+     * @param int $connectionTimeout >= 0
+     *
+     * @throws \HttpClientException if timeout settings are invalid
+     */
+    public function __construct() {
+    
+        $this->addUserAgentString('CAMOO/ApiClient/' . static::CLIENT_VERSION);
+        $this->addUserAgentString($this->getPhpVersion());
+
+	if ( is_null($this->oClient) ) { 
+		$this->oClient = new Client();
+	}
+    }
+
+    public function setConnectionTimeout($connectionTimeout) 
+    {
+
+        if (!is_int($connectionTimeout) || $connectionTimeout < 0) {
+            throw new HttpClientException(sprintf(
+                'Connection timeout must be an int >= 0, got "%s".',
+                is_object($connectionTimeout) ? get_class($connectionTimeout) : gettype($connectionTimeout).' '.var_export($connectionTimeout, true))
+            );
+        }
+
+	    $this->connectionTimeout = $connectionTimeout;
+    }
+
+    /**
+     * @param string $userAgent
+     */
+    public function addUserAgentString($userAgent)
+    {
+        $this->userAgent[] = $userAgent;
+    }
+
+
+    /**
+     * @param string      $method
+     * @param Array $option
+     *
+     * @return mixed
+     *
+     * @throws HttpClientException
+     */
+
+    public function performRequest($sMethod, $option=array()) {
+	    $this->endpoint = $this->getEndPointUrl();
+	    $this->calRequestOption($sMethod, $option);
+
+	    try {
+		   $oResponse = $this->oClient->request($sMethod, $this->endpoint, $option);
+		//$reason = $oResponse->getReasonPhrase(); // OK
+		   if ( $oResponse->getStatusCode() === 200 ) { 
+		     return $this->decode($oResponse->getBody());
+		  }
+		throw new HttpClientException();
+	    } catch (RequestException $e) {
+		    throw new HttpClientException(Psr7\str($e->getRequest()));
+		    if ($e->hasResponse()) {
+			throw new HttpClientException(Psr7\str($e->getResponse()));
+		    }
+	    }
+    }
+
+    private function calRequestOption($sMethod, &$option) {
+	    $this->oAuthentication = $this->getCredentials();
+	    $data = $this->oAuthentication->toArray();
+	    $data['user_agent'] = implode(' ', $this->userAgent);
+
+	    $defaultHeaders = [
+		    'User-Agent' => $data['user_agent'],
+		    //    'Accept'     => 'application/json',
+		    'X-CAMOO'    => $this->userAgent
+	    ];
+        $defaults = ['headers' => $defaultHeaders];
+
+	    foreach ($this->_WellKownRequestOption as $sKey) {
+		    if ( array_key_exists($sKey, $option) ) {
+			    $option[$sKey] = array_merge($option[$sKey], $data);
+		    }
+	    }
+        $option += $defaults;
+    }
+	
+     /**
+     * @return string
+     */
+    private function getPhpVersion() {
+        if (!defined('PHP_VERSION_ID')) {
+            $version = explode('.', PHP_VERSION);
+            define('PHP_VERSION_ID', $version[0] * 10000 + $version[1] * 100 + $version[2]);
+        }
+        return 'PHP/' . PHP_VERSION_ID;
+    }
+}

src/autoload.php

+<?php
+/**
+ * Copyright 2017 Camoo Sarl.
+ *
+ */
+define('CAMOO_SRC_DIR', __DIR__.'/CAMOO/');
+define('CAMOO_ROOT_SRC_DIR', dirname(__DIR__).'/');
+
+if (version_compare(PHP_VERSION, '5.5.0', '<')) {
+  throw new Exception('The CAMOO API requires PHP version 5.5 or higher.');
+}
+
+/**
+ *
+ * @param string $class The fully-qualified class name.
+ * @return void
+ */
+spl_autoload_register(function ($class)
+{
+  // project-specific namespace prefix
+  $prefix = 'CAMOO\\';
+
+  // base directory for the namespace prefix
+  $base_dir = defined('CAMOO_SRC_DIR') ? CAMOO_SRC_DIR : __DIR__ . '/CAMOO/';
+
+  // does the class use the namespace prefix?
+  $len = strlen($prefix);
+  if (strncmp($prefix, $class, $len) !== 0) {
+    // no, move to the next registered autoloader
+    return;
+  }
+
+  // get the relative class name
+  $relative_class = substr($class, $len);
+
+  // replace the namespace prefix with the base directory, replace namespace
+  // separators with directory separators in the relative class name, append
+  // with .php
+  $sFile = $base_dir . str_replace('\\', '/', $relative_class) . '.php';
+
+  // if the file exists, require it
+  if ( file_exists($sFile) ) {
+    require $sFile;
+  }
+});

vendor/autoload.php

+<?php
+
+// autoload.php @generated by Composer
+
+require_once __DIR__ . '/composer/autoload_real.php';
+
+return ComposerAutoloaderInitfc3fe251899047fc20c7e533ad2074e3::getLoader();

vendor/composer/LICENSE

+
+Copyright (c) Nils Adermann, Jordi Boggiano
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+

vendor/composer/autoload_classmap.php

+<?php
+
+// autoload_classmap.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+);

vendor/composer/autoload_files.php

+<?php
+
+// autoload_files.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    'c964ee0ededf28c96ebd9db5099ef910' => $vendorDir . '/guzzlehttp/promises/src/functions_include.php',
+    'a0edc8309cc5e1d60e3047b5df6b7052' => $vendorDir . '/guzzlehttp/psr7/src/functions_include.php',
+    '37a3dc5111fe8f707ab4c132ef1dbc62' => $vendorDir . '/guzzlehttp/guzzle/src/functions_include.php',
+);

vendor/composer/autoload_namespaces.php

+<?php
+
+// autoload_namespaces.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+);

vendor/composer/autoload_psr4.php

+<?php
+
+// autoload_psr4.php @generated by Composer
+
+$vendorDir = dirname(dirname(__FILE__));
+$baseDir = dirname($vendorDir);
+
+return array(
+    'Psr\\Http\\Message\\' => array($vendorDir . '/psr/http-message/src'),
+    'GuzzleHttp\\Psr7\\' => array($vendorDir . '/guzzlehttp/psr7/src'),
+    'GuzzleHttp\\Promise\\' => array($vendorDir . '/guzzlehttp/promises/src'),
+    'GuzzleHttp\\' => array($vendorDir . '/guzzlehttp/guzzle/src'),
+);

vendor/composer/autoload_real.php

+<?php
+
+// autoload_real.php @generated by Composer
+
+class ComposerAutoloaderInitfc3fe251899047fc20c7e533ad2074e3
+{
+    private static $loader;
+
+    public static function loadClassLoader($class)
+    {
+        if ('Composer\Autoload\ClassLoader' === $class) {
+            require __DIR__ . '/ClassLoader.php';
+        }
+    }
+
+    public static function getLoader()
+    {
+        if (null !== self::$loader) {
+            return self::$loader;
+        }
+
+        spl_autoload_register(array('ComposerAutoloaderInitfc3fe251899047fc20c7e533ad2074e3', 'loadClassLoader'), true, true);
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        spl_autoload_unregister(array('ComposerAutoloaderInitfc3fe251899047fc20c7e533ad2074e3', 'loadClassLoader'));
+
+        $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());
+        if ($useStaticLoader) {
+            require_once __DIR__ . '/autoload_static.php';
+
+            call_user_func(\Composer\Autoload\ComposerStaticInitfc3fe251899047fc20c7e533ad2074e3::getInitializer($loader));
+        } else {
+            $map = require __DIR__ . '/autoload_namespaces.php';
+            foreach ($map as $namespace => $path) {
+                $loader->set($namespace, $path);
+            }
+
+            $map = require __DIR__ . '/autoload_psr4.php';
+            foreach ($map as $namespace => $path) {
+                $loader->setPsr4($namespace, $path);
+            }
+
+            $classMap = require __DIR__ . '/autoload_classmap.php';
+            if ($classMap) {
+                $loader->addClassMap($classMap);
+            }
+        }
+
+        $loader->register(true);
+
+        if ($useStaticLoader) {
+            $includeFiles = Composer\Autoload\ComposerStaticInitfc3fe251899047fc20c7e533ad2074e3::$files;
+        } else {
+            $includeFiles = require __DIR__ . '/autoload_files.php';
+        }
+        foreach ($includeFiles as $fileIdentifier => $file) {
+            composerRequirefc3fe251899047fc20c7e533ad2074e3($fileIdentifier, $file);
+        }
+
+        return $loader;
+    }
+}
+
+function composerRequirefc3fe251899047fc20c7e533ad2074e3($fileIdentifier, $file)
+{
+    if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+        require $file;
+
+        $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+    }
+}

vendor/composer/autoload_static.php

+<?php
+
+// autoload_static.php @generated by Composer
+
+namespace Composer\Autoload;
+
+class ComposerStaticInitfc3fe251899047fc20c7e533ad2074e3
+{
+    public static $files = array (
+        'c964ee0ededf28c96ebd9db5099ef910' => __DIR__ . '/..' . '/guzzlehttp/promises/src/functions_include.php',
+        'a0edc8309cc5e1d60e3047b5df6b7052' => __DIR__ . '/..' . '/guzzlehttp/psr7/src/functions_include.php',
+        '37a3dc5111fe8f707ab4c132ef1dbc62' => __DIR__ . '/..' . '/guzzlehttp/guzzle/src/functions_include.php',
+    );
+
+    public static $prefixLengthsPsr4 = array (
+        'P' => 
+        array (
+            'Psr\\Http\\Message\\' => 17,
+        ),
+        'G' => 
+        array (
+            'GuzzleHttp\\Psr7\\' => 16,
+            'GuzzleHttp\\Promise\\' => 19,
+            'GuzzleHttp\\' => 11,
+        ),
+    );
+
+    public static $prefixDirsPsr4 = array (
+        'Psr\\Http\\Message\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/psr/http-message/src',
+        ),
+        'GuzzleHttp\\Psr7\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/guzzlehttp/psr7/src',
+        ),
+        'GuzzleHttp\\Promise\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/guzzlehttp/promises/src',
+        ),
+        'GuzzleHttp\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/guzzlehttp/guzzle/src',
+        ),
+    );
+
+    public static function getInitializer(ClassLoader $loader)
+    {
+        return \Closure::bind(function () use ($loader) {
+            $loader->prefixLengthsPsr4 = ComposerStaticInitfc3fe251899047fc20c7e533ad2074e3::$prefixLengthsPsr4;
+            $loader->prefixDirsPsr4 = ComposerStaticInitfc3fe251899047fc20c7e533ad2074e3::$prefixDirsPsr4;
+
+        }, null, ClassLoader::class);
+    }
+}

vendor/composer/installed.json

+[
+    {
+        "name": "guzzlehttp/promises",
+        "version": "v1.3.1",
+        "version_normalized": "1.3.1.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/guzzle/promises.git",
+            "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/guzzle/promises/zipball/a59da6cf61d80060647ff4d3eb2c03a2bc694646",
+            "reference": "a59da6cf61d80060647ff4d3eb2c03a2bc694646",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.5.0"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "^4.0"
+        },
+        "time": "2016-12-20T10:07:11+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-master": "1.4-dev"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "GuzzleHttp\\Promise\\": "src/"
+            },
+            "files": [
+                "src/functions_include.php"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Michael Dowling",
+                "email": "mtdowling@gmail.com",
+                "homepage": "https://github.com/mtdowling"
+            }
+        ],
+        "description": "Guzzle promises library",
+        "keywords": [
+            "promise"
+        ]
+    },
+    {
+        "name": "psr/http-message",
+        "version": "1.0.1",
+        "version_normalized": "1.0.1.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/php-fig/http-message.git",
+            "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/php-fig/http-message/zipball/f6561bf28d520154e4b0ec72be95418abe6d9363",
+            "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.3.0"
+        },
+        "time": "2016-08-06T14:39:51+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-master": "1.0.x-dev"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Psr\\Http\\Message\\": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "PHP-FIG",
+                "homepage": "http://www.php-fig.org/"
+            }
+        ],
+        "description": "Common interface for HTTP messages",
+        "homepage": "https://github.com/php-fig/http-message",
+        "keywords": [
+            "http",
+            "http-message",
+            "psr",
+            "psr-7",
+            "request",
+            "response"
+        ]
+    },
+    {
+        "name": "guzzlehttp/psr7",
+        "version": "1.4.2",
+        "version_normalized": "1.4.2.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/guzzle/psr7.git",
+            "reference": "f5b8a8512e2b58b0071a7280e39f14f72e05d87c"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/guzzle/psr7/zipball/f5b8a8512e2b58b0071a7280e39f14f72e05d87c",
+            "reference": "f5b8a8512e2b58b0071a7280e39f14f72e05d87c",
+            "shasum": ""
+        },
+        "require": {
+            "php": ">=5.4.0",
+            "psr/http-message": "~1.0"
+        },
+        "provide": {
+            "psr/http-message-implementation": "1.0"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "~4.0"
+        },
+        "time": "2017-03-20T17:10:46+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-master": "1.4-dev"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "GuzzleHttp\\Psr7\\": "src/"
+            },
+            "files": [
+                "src/functions_include.php"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Michael Dowling",
+                "email": "mtdowling@gmail.com",
+                "homepage": "https://github.com/mtdowling"
+            },
+            {
+                "name": "Tobias Schultze",
+                "homepage": "https://github.com/Tobion"
+            }
+        ],
+        "description": "PSR-7 message implementation that also provides common utility methods",
+        "keywords": [
+            "http",
+            "message",
+            "request",
+            "response",
+            "stream",
+            "uri",
+            "url"
+        ]
+    },
+    {
+        "name": "guzzlehttp/guzzle",
+        "version": "6.2.3",
+        "version_normalized": "6.2.3.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/guzzle/guzzle.git",
+            "reference": "8d6c6cc55186db87b7dc5009827429ba4e9dc006"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/guzzle/guzzle/zipball/8d6c6cc55186db87b7dc5009827429ba4e9dc006",
+            "reference": "8d6c6cc55186db87b7dc5009827429ba4e9dc006",
+            "shasum": ""
+        },
+        "require": {
+            "guzzlehttp/promises": "^1.0",
+            "guzzlehttp/psr7": "^1.4",
+            "php": ">=5.5"
+        },
+        "require-dev": {
+            "ext-curl": "*",
+            "phpunit/phpunit": "^4.0",
+            "psr/log": "^1.0"
+        },
+        "time": "2017-02-28T22:50:30+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-master": "6.2-dev"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "files": [
+                "src/functions_include.php"
+            ],
+            "psr-4": {
+                "GuzzleHttp\\": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Michael Dowling",
+                "email": "mtdowling@gmail.com",
+                "homepage": "https://github.com/mtdowling"
+            }
+        ],
+        "description": "Guzzle is a PHP HTTP client library",
+        "homepage": "http://guzzlephp.org/",
+        "keywords": [
+            "client",
+            "curl",
+            "framework",
+            "http",
+            "http client",
+            "rest",
+            "web service"
+        ]
+    }
+]

vendor/guzzlehttp/guzzle/.travis.yml

+language: php
+
+sudo: false
+
+php:
+  - 5.5
+  - 5.6
+  - 7.0
+  - 7.1
+  - hhvm
+
+before_script:
+  - curl --version
+  - composer install --no-interaction --prefer-source --dev
+  - ~/.nvm/nvm.sh install v0.6.14
+  - ~/.nvm/nvm.sh run v0.6.14
+  - '[ "$TRAVIS_PHP_VERSION" != "7.0" ] || echo "xdebug.overload_var_dump = 1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini'
+
+script: make test
+
+matrix:
+  allow_failures:
+    - php: hhvm
+  fast_finish: true
+
+before_deploy:
+  - rvm 1.9.3 do gem install mime-types -v 2.6.2
+  - make package
+
+deploy:
+  provider: releases
+  api_key:
+    secure: UpypqlYgsU68QT/x40YzhHXvzWjFwCNo9d+G8KAdm7U9+blFfcWhV1aMdzugvPMl6woXgvJj7qHq5tAL4v6oswCORhpSBfLgOQVFaica5LiHsvWlAedOhxGmnJqMTwuepjBCxXhs3+I8Kof1n4oUL9gKytXjOVCX/f7XU1HiinU=
+  file:
+    - build/artifacts/guzzle.phar
+    - build/artifacts/guzzle.zip
+  on:
+    repo: guzzle/guzzle
+    tags: true
+    all_branches: true
+    php: 5.5

vendor/guzzlehttp/guzzle/LICENSE

+Copyright (c) 2011-2016 Michael Dowling, https://github.com/mtdowling <mtdowling@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/guzzlehttp/guzzle/README.md

+Guzzle, PHP HTTP client
+=======================
+
+[![Build Status](https://travis-ci.org/guzzle/guzzle.svg?branch=master)](https://travis-ci.org/guzzle/guzzle)
+
+Guzzle is a PHP HTTP client that makes it easy to send HTTP requests and
+trivial to integrate with web services.
+
+- Simple interface for building query strings, POST requests, streaming large
+  uploads, streaming large downloads, using HTTP cookies, uploading JSON data,
+  etc...
+- Can send both synchronous and asynchronous requests using the same interface.
+- Uses PSR-7 interfaces for requests, responses, and streams. This allows you
+  to utilize other PSR-7 compatible libraries with Guzzle.
+- Abstracts away the underlying HTTP transport, allowing you to write
+  environment and transport agnostic code; i.e., no hard dependency on cURL,
+  PHP streams, sockets, or non-blocking event loops.
+- Middleware system allows you to augment and compose client behavior.
+
+```php
+$client = new \GuzzleHttp\Client();
+$res = $client->request('GET', 'https://api.github.com/user', [
+    'auth' => ['user', 'pass']
+]);
+echo $res->getStatusCode();
+// 200
+echo $res->getHeaderLine('content-type');
+// 'application/json; charset=utf8'
+echo $res->getBody();
+// {"type":"User"...'
+
+// Send an asynchronous request.
+$request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org');
+$promise = $client->sendAsync($request)->then(function ($response) {
+    echo 'I completed! ' . $response->getBody();
+});
+$promise->wait();
+```
+
+## Help and docs
+
+- [Documentation](http://guzzlephp.org/)
+- [stackoverflow](http://stackoverflow.com/questions/tagged/guzzle)
+- [Gitter](https://gitter.im/guzzle/guzzle)
+
+
+## Installing Guzzle
+
+The recommended way to install Guzzle is through
+[Composer](http://getcomposer.org).
+
+```bash
+# Install Composer
+curl -sS https://getcomposer.org/installer | php
+```
+
+Next, run the Composer command to install the latest stable version of Guzzle:
+
+```bash
+php composer.phar require guzzlehttp/guzzle
+```
+
+After installing, you need to require Composer's autoloader:
+
+```php
+require 'vendor/autoload.php';
+```
+
+You can then later update Guzzle using composer:
+
+ ```bash
+composer.phar update
+ ```
+
+
+## Version Guidance
+
+| Version | Status      | Packagist           | Namespace    | Repo                | Docs                | PSR-7 |
+|---------|-------------|---------------------|--------------|---------------------|---------------------|-------|
+| 3.x     | EOL         | `guzzle/guzzle`     | `Guzzle`     | [v3][guzzle-3-repo] | [v3][guzzle-3-docs] | No    |
+| 4.x     | EOL         | `guzzlehttp/guzzle` | `GuzzleHttp` | N/A                 | N/A                 | No    |
+| 5.x     | Maintained  | `guzzlehttp/guzzle` | `GuzzleHttp` | [v5][guzzle-5-repo] | [v5][guzzle-5-docs] | No    |
+| 6.x     | Latest      | `guzzlehttp/guzzle` | `GuzzleHttp` | [v6][guzzle-6-repo] | [v6][guzzle-6-docs] | Yes   |
+
+[guzzle-3-repo]: https://github.com/guzzle/guzzle3
+[guzzle-5-repo]: https://github.com/guzzle/guzzle/tree/5.3
+[guzzle-6-repo]: https://github.com/guzzle/guzzle
+[guzzle-3-docs]: http://guzzle3.readthedocs.org/en/latest/
+[guzzle-5-docs]: http://guzzle.readthedocs.org/en/5.3/
+[guzzle-6-docs]: http://guzzle.readthedocs.org/en/latest/

vendor/guzzlehttp/guzzle/composer.json

+{
+    "name": "guzzlehttp/guzzle",
+    "type": "library",
+    "description": "Guzzle is a PHP HTTP client library",
+    "keywords": ["framework", "http", "rest", "web service", "curl", "client", "HTTP client"],
+    "homepage": "http://guzzlephp.org/",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Michael Dowling",
+            "email": "mtdowling@gmail.com",
+            "homepage": "https://github.com/mtdowling"
+        }
+    ],
+    "require": {
+        "php": ">=5.5",
+        "guzzlehttp/psr7": "^1.4",
+        "guzzlehttp/promises": "^1.0"
+    },
+    "require-dev": {
+        "ext-curl": "*",
+        "phpunit/phpunit": "^4.0",
+        "psr/log": "^1.0"
+    },
+    "autoload": {
+        "files": ["src/functions_include.php"],
+        "psr-4": {
+            "GuzzleHttp\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "GuzzleHttp\\Tests\\": "tests/"
+        }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "6.2-dev"
+        }
+    }
+}

vendor/guzzlehttp/guzzle/src/ClientInterface.php

+<?php
+namespace GuzzleHttp;
+
+use GuzzleHttp\Promise\PromiseInterface;
+use GuzzleHttp\Exception\GuzzleException;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * Client interface for sending HTTP requests.
+ */
+interface ClientInterface
+{
+    const VERSION = '6.2.1';
+
+    /**
+     * Send an HTTP request.
+     *
+     * @param RequestInterface $request Request to send
+     * @param array            $options Request options to apply to the given
+     *                                  request and to the transfer.
+     *
+     * @return ResponseInterface
+     * @throws GuzzleException
+     */
+    public function send(RequestInterface $request, array $options = []);
+
+    /**
+     * Asynchronously send an HTTP request.
+     *
+     * @param RequestInterface $request Request to send
+     * @param array            $options Request options to apply to the given
+     *                                  request and to the transfer.
+     *
+     * @return PromiseInterface
+     */
+    public function sendAsync(RequestInterface $request, array $options = []);
+
+    /**
+     * Create and send an HTTP request.
+     *
+     * Use an absolute path to override the base path of the client, or a
+     * relative path to append to the base path of the client. The URL can
+     * contain the query string as well.
+     *
+     * @param string              $method  HTTP method.
+     * @param string|UriInterface $uri     URI object or string.
+     * @param array               $options Request options to apply.
+     *
+     * @return ResponseInterface
+     * @throws GuzzleException
+     */
+    public function request($method, $uri, array $options = []);
+
+    /**
+     * Create and send an asynchronous HTTP request.
+     *
+     * Use an absolute path to override the base path of the client, or a
+     * relative path to append to the base path of the client. The URL can
+     * contain the query string as well. Use an array to provide a URL
+     * template and additional variables to use in the URL template expansion.
+     *
+     * @param string              $method  HTTP method
+     * @param string|UriInterface $uri     URI object or string.
+     * @param array               $options Request options to apply.
+     *
+     * @return PromiseInterface
+     */
+    public function requestAsync($method, $uri, array $options = []);
+
+    /**
+     * Get a client configuration option.
+     *
+     * These options include default request options of the client, a "handler"
+     * (if utilized by the concrete client), and a "base_uri" if utilized by
+     * the concrete client.
+     *
+     * @param string|null $option The config option to retrieve.
+     *
+     * @return mixed
+     */
+    public function getConfig($option = null);
+}

vendor/guzzlehttp/guzzle/src/Cookie/CookieJar.php

+<?php
+namespace GuzzleHttp\Cookie;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Cookie jar that stores cookies as an array
+ */
+class CookieJar implements CookieJarInterface
+{
+    /** @var SetCookie[] Loaded cookie data */
+    private $cookies = [];
+
+    /** @var bool */
+    private $strictMode;
+
+    /**
+     * @param bool $strictMode   Set to true to throw exceptions when invalid
+     *                           cookies are added to the cookie jar.
+     * @param array $cookieArray Array of SetCookie objects or a hash of
+     *                           arrays that can be used with the SetCookie
+     *                           constructor
+     */
+    public function __construct($strictMode = false, $cookieArray = [])
+    {
+        $this->strictMode = $strictMode;
+
+        foreach ($cookieArray as $cookie) {
+            if (!($cookie instanceof SetCookie)) {
+                $cookie = new SetCookie($cookie);
+            }
+            $this->setCookie($cookie);
+        }
+    }
+
+    /**
+     * Create a new Cookie jar from an associative array and domain.
+     *
+     * @param array  $cookies Cookies to create the jar from
+     * @param string $domain  Domain to set the cookies to
+     *
+     * @return self
+     */
+    public static function fromArray(array $cookies, $domain)
+    {
+        $cookieJar = new self();
+        foreach ($cookies as $name => $value) {
+            $cookieJar->setCookie(new SetCookie([
+                'Domain'  => $domain,
+                'Name'    => $name,
+                'Value'   => $value,
+                'Discard' => true
+            ]));
+        }
+
+        return $cookieJar;
+    }
+
+    /**
+     * @deprecated
+     */
+    public static function getCookieValue($value)
+    {
+        return $value;
+    }
+
+    /**
+     * Evaluate if this cookie should be persisted to storage
+     * that survives between requests.
+     *
+     * @param SetCookie $cookie Being evaluated.
+     * @param bool $allowSessionCookies If we should persist session cookies
+     * @return bool
+     */
+    public static function shouldPersist(
+        SetCookie $cookie,
+        $allowSessionCookies = false
+    ) {
+        if ($cookie->getExpires() || $allowSessionCookies) {
+            if (!$cookie->getDiscard()) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function toArray()
+    {
+        return array_map(function (SetCookie $cookie) {
+            return $cookie->toArray();
+        }, $this->getIterator()->getArrayCopy());
+    }
+
+    public function clear($domain = null, $path = null, $name = null)
+    {
+        if (!$domain) {
+            $this->cookies = [];
+            return;
+        } elseif (!$path) {
+            $this->cookies = array_filter(
+                $this->cookies,
+                function (SetCookie $cookie) use ($path, $domain) {
+                    return !$cookie->matchesDomain($domain);
+                }
+            );
+        } elseif (!$name) {
+            $this->cookies = array_filter(
+                $this->cookies,
+                function (SetCookie $cookie) use ($path, $domain) {
+                    return !($cookie->matchesPath($path) &&
+                        $cookie->matchesDomain($domain));
+                }
+            );
+        } else {
+            $this->cookies = array_filter(
+                $this->cookies,
+                function (SetCookie $cookie) use ($path, $domain, $name) {
+                    return !($cookie->getName() == $name &&
+                        $cookie->matchesPath($path) &&
+                        $cookie->matchesDomain($domain));
+                }
+            );
+        }
+    }
+
+    public function clearSessionCookies()
+    {
+        $this->cookies = array_filter(
+            $this->cookies,
+            function (SetCookie $cookie) {
+                return !$cookie->getDiscard() && $cookie->getExpires();
+            }
+        );
+    }
+
+    public function setCookie(SetCookie $cookie)
+    {
+        // If the name string is empty (but not 0), ignore the set-cookie
+        // string entirely.
+        $name = $cookie->getName();
+        if (!$name && $name !== '0') {
+            return false;
+        }
+
+        // Only allow cookies with set and valid domain, name, value
+        $result = $cookie->validate();
+        if ($result !== true) {
+            if ($this->strictMode) {
+                throw new \RuntimeException('Invalid cookie: ' . $result);
+            } else {
+                $this->removeCookieIfEmpty($cookie);
+                return false;
+            }
+        }
+
+        // Resolve conflicts with previously set cookies
+        foreach ($this->cookies as $i => $c) {
+
+            // Two cookies are identical, when their path, and domain are
+            // identical.
+            if ($c->getPath() != $cookie->getPath() ||
+                $c->getDomain() != $cookie->getDomain() ||
+                $c->getName() != $cookie->getName()
+            ) {
+                continue;
+            }
+
+            // The previously set cookie is a discard cookie and this one is
+            // not so allow the new cookie to be set
+            if (!$cookie->getDiscard() && $c->getDiscard()) {
+                unset($this->cookies[$i]);
+                continue;
+            }
+
+            // If the new cookie's expiration is further into the future, then
+            // replace the old cookie
+            if ($cookie->getExpires() > $c->getExpires()) {
+                unset($this->cookies[$i]);
+                continue;
+            }
+
+            // If the value has changed, we better change it
+            if ($cookie->getValue() !== $c->getValue()) {
+                unset($this->cookies[$i]);
+                continue;
+            }
+
+            // The cookie exists, so no need to continue
+            return false;
+        }
+
+        $this->cookies[] = $cookie;
+
+        return true;
+    }
+
+    public function count()
+    {
+        return count($this->cookies);
+    }
+
+    public function getIterator()
+    {
+        return new \ArrayIterator(array_values($this->cookies));
+    }
+
+    public function extractCookies(
+        RequestInterface $request,
+        ResponseInterface $response
+    ) {
+        if ($cookieHeader = $response->getHeader('Set-Cookie')) {
+            foreach ($cookieHeader as $cookie) {
+                $sc = SetCookie::fromString($cookie);
+                if (!$sc->getDomain()) {
+                    $sc->setDomain($request->getUri()->getHost());
+                }
+                $this->setCookie($sc);
+            }
+        }
+    }
+
+    public function withCookieHeader(RequestInterface $request)
+    {
+        $values = [];
+        $uri = $request->getUri();
+        $scheme = $uri->getScheme();
+        $host = $uri->getHost();
+        $path = $uri->getPath() ?: '/';
+
+        foreach ($this->cookies as $cookie) {
+            if ($cookie->matchesPath($path) &&
+                $cookie->matchesDomain($host) &&
+                !$cookie->isExpired() &&
+                (!$cookie->getSecure() || $scheme === 'https')
+            ) {
+                $values[] = $cookie->getName() . '='
+                    . $cookie->getValue();
+            }
+        }
+
+        return $values
+            ? $request->withHeader('Cookie', implode('; ', $values))
+            : $request;
+    }
+
+    /**
+     * If a cookie already exists and the server asks to set it again with a
+     * null value, the cookie must be deleted.
+     *
+     * @param SetCookie $cookie
+     */
+    private function removeCookieIfEmpty(SetCookie $cookie)
+    {
+        $cookieValue = $cookie->getValue();
+        if ($cookieValue === null || $cookieValue === '') {
+            $this->clear(
+                $cookie->getDomain(),
+                $cookie->getPath(),
+                $cookie->getName()
+            );
+        }
+    }
+}

vendor/guzzlehttp/guzzle/src/Cookie/CookieJarInterface.php

+<?php
+namespace GuzzleHttp\Cookie;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Stores HTTP cookies.
+ *
+ * It extracts cookies from HTTP requests, and returns them in HTTP responses.
+ * CookieJarInterface instances automatically expire contained cookies when
+ * necessary. Subclasses are also responsible for storing and retrieving
+ * cookies from a file, database, etc.
+ *
+ * @link http://docs.python.org/2/library/cookielib.html Inspiration
+ */
+interface CookieJarInterface extends \Countable, \IteratorAggregate
+{
+    /**
+     * Create a request with added cookie headers.
+     *
+     * If no matching cookies are found in the cookie jar, then no Cookie
+     * header is added to the request and the same request is returned.
+     *
+     * @param RequestInterface $request Request object to modify.
+     *
+     * @return RequestInterface returns the modified request.
+     */
+    public function withCookieHeader(RequestInterface $request);
+
+    /**
+     * Extract cookies from an HTTP response and store them in the CookieJar.
+     *
+     * @param RequestInterface  $request  Request that was sent
+     * @param ResponseInterface $response Response that was received
+     */
+    public function extractCookies(
+        RequestInterface $request,
+        ResponseInterface $response
+    );
+
+    /**
+     * Sets a cookie in the cookie jar.
+     *
+     * @param SetCookie $cookie Cookie to set.
+     *
+     * @return bool Returns true on success or false on failure
+     */
+    public function setCookie(SetCookie $cookie);
+
+    /**
+     * Remove cookies currently held in the cookie jar.
+     *
+     * Invoking this method without arguments will empty the whole cookie jar.
+     * If given a $domain argument only cookies belonging to that domain will
+     * be removed. If given a $domain and $path argument, cookies belonging to
+     * the specified path within that domain are removed. If given all three
+     * arguments, then the cookie with the specified name, path and domain is
+     * removed.
+     *
+     * @param string $domain Clears cookies matching a domain
+     * @param string $path   Clears cookies matching a domain and path
+     * @param string $name   Clears cookies matching a domain, path, and name
+     *
+     * @return CookieJarInterface
+     */
+    public function clear($domain = null, $path = null, $name = null);
+
+    /**
+     * Discard all sessions cookies.
+     *
+     * Removes cookies that don't have an expire field or a have a discard
+     * field set to true. To be called when the user agent shuts down according
+     * to RFC 2965.
+     */
+    public function clearSessionCookies();
+
+    /**
+     * Converts the cookie jar to an array.
+     *
+     * @return array
+     */
+    public function toArray();
+}

vendor/guzzlehttp/guzzle/src/Cookie/FileCookieJar.php

+<?php
+namespace GuzzleHttp\Cookie;
+
+/**
+ * Persists non-session cookies using a JSON formatted file
+ */
+class FileCookieJar extends CookieJar
+{
+    /** @var string filename */
+    private $filename;
+
+    /** @var bool Control whether to persist session cookies or not. */
+    private $storeSessionCookies;
+
+    /**
+     * Create a new FileCookieJar object
+     *
+     * @param string $cookieFile        File to store the cookie data
+     * @param bool $storeSessionCookies Set to true to store session cookies
+     *                                  in the cookie jar.
+     *
+     * @throws \RuntimeException if the file cannot be found or created
+     */
+    public function __construct($cookieFile, $storeSessionCookies = false)
+    {
+        $this->filename = $cookieFile;
+        $this->storeSessionCookies = $storeSessionCookies;
+
+        if (file_exists($cookieFile)) {
+            $this->load($cookieFile);
+        }
+    }
+
+    /**
+     * Saves the file when shutting down
+     */
+    public function __destruct()
+    {
+        $this->save($this->filename);
+    }
+
+    /**
+     * Saves the cookies to a file.
+     *
+     * @param string $filename File to save
+     * @throws \RuntimeException if the file cannot be found or created
+     */
+    public function save($filename)
+    {
+        $json = [];
+        foreach ($this as $cookie) {
+            /** @var SetCookie $cookie */
+            if (CookieJar::shouldPersist($cookie, $this->storeSessionCookies)) {
+                $json[] = $cookie->toArray();
+            }
+        }
+
+        $jsonStr = \GuzzleHttp\json_encode($json);
+        if (false === file_put_contents($filename, $jsonStr)) {
+            throw new \RuntimeException("Unable to save file {$filename}");
+        }
+    }
+
+    /**
+     * Load cookies from a JSON formatted file.
+     *
+     * Old cookies are kept unless overwritten by newly loaded ones.
+     *
+     * @param string $filename Cookie file to load.
+     * @throws \RuntimeException if the file cannot be loaded.
+     */
+    public function load($filename)
+    {
+        $json = file_get_contents($filename);
+        if (false === $json) {
+            throw new \RuntimeException("Unable to load file {$filename}");
+        } elseif ($json === '') {
+            return;
+        }
+
+        $data = \GuzzleHttp\json_decode($json, true);
+        if (is_array($data)) {
+            foreach (json_decode($json, true) as $cookie) {
+                $this->setCookie(new SetCookie($cookie));
+            }
+        } elseif (strlen($data)) {
+            throw new \RuntimeException("Invalid cookie file: {$filename}");
+        }
+    }
+}

vendor/guzzlehttp/guzzle/src/Cookie/SessionCookieJar.php

+<?php
+namespace GuzzleHttp\Cookie;
+
+/**
+ * Persists cookies in the client session
+ */
+class SessionCookieJar extends CookieJar
+{
+    /** @var string session key */
+    private $sessionKey;
+    
+    /** @var bool Control whether to persist session cookies or not. */
+    private $storeSessionCookies;
+
+    /**
+     * Create a new SessionCookieJar object
+     *
+     * @param string $sessionKey        Session key name to store the cookie 
+     *                                  data in session
+     * @param bool $storeSessionCookies Set to true to store session cookies
+     *                                  in the cookie jar.
+     */
+    public function __construct($sessionKey, $storeSessionCookies = false)
+    {
+        $this->sessionKey = $sessionKey;
+        $this->storeSessionCookies = $storeSessionCookies;
+        $this->load();
+    }
+
+    /**
+     * Saves cookies to session when shutting down
+     */
+    public function __destruct()
+    {
+        $this->save();
+    }
+
+    /**
+     * Save cookies to the client session
+     */
+    public function save()
+    {
+        $json = [];
+        foreach ($this as $cookie) {
+            /** @var SetCookie $cookie */
+            if (CookieJar::shouldPersist($cookie, $this->storeSessionCookies)) {
+                $json[] = $cookie->toArray();
+            }
+        }
+
+        $_SESSION[$this->sessionKey] = json_encode($json);
+    }
+
+    /**
+     * Load the contents of the client session into the data array
+     */
+    protected function load()
+    {
+        if (!isset($_SESSION[$this->sessionKey])) {
+            return;
+        }
+        $data = json_decode($_SESSION[$this->sessionKey], true);
+        if (is_array($data)) {
+            foreach ($data as $cookie) {
+                $this->setCookie(new SetCookie($cookie));
+            }
+        } elseif (strlen($data)) {
+            throw new \RuntimeException("Invalid cookie data");
+        }
+    }
+}

vendor/guzzlehttp/guzzle/src/Exception/BadResponseException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+/**
+ * Exception when an HTTP error occurs (4xx or 5xx error)
+ */
+class BadResponseException extends RequestException {}

vendor/guzzlehttp/guzzle/src/Exception/ClientException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+/**
+ * Exception when a client error is encountered (4xx codes)
+ */
+class ClientException extends BadResponseException {}

vendor/guzzlehttp/guzzle/src/Exception/ConnectException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+use Psr\Http\Message\RequestInterface;
+
+/**
+ * Exception thrown when a connection cannot be established.
+ *
+ * Note that no response is present for a ConnectException
+ */
+class ConnectException extends RequestException
+{
+    public function __construct(
+        $message,
+        RequestInterface $request,
+        \Exception $previous = null,
+        array $handlerContext = []
+    ) {
+        parent::__construct($message, $request, null, $previous, $handlerContext);
+    }
+
+    /**
+     * @return null
+     */
+    public function getResponse()
+    {
+        return null;
+    }
+
+    /**
+     * @return bool
+     */
+    public function hasResponse()
+    {
+        return false;
+    }
+}

vendor/guzzlehttp/guzzle/src/Exception/GuzzleException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+interface GuzzleException {}

vendor/guzzlehttp/guzzle/src/Exception/RequestException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * HTTP Request exception
+ */
+class RequestException extends TransferException
+{
+    /** @var RequestInterface */
+    private $request;
+
+    /** @var ResponseInterface */
+    private $response;
+
+    /** @var array */
+    private $handlerContext;
+
+    public function __construct(
+        $message,
+        RequestInterface $request,
+        ResponseInterface $response = null,
+        \Exception $previous = null,
+        array $handlerContext = []
+    ) {
+        // Set the code of the exception if the response is set and not future.
+        $code = $response && !($response instanceof PromiseInterface)
+            ? $response->getStatusCode()
+            : 0;
+        parent::__construct($message, $code, $previous);
+        $this->request = $request;
+        $this->response = $response;
+        $this->handlerContext = $handlerContext;
+    }
+
+    /**
+     * Wrap non-RequestExceptions with a RequestException
+     *
+     * @param RequestInterface $request
+     * @param \Exception       $e
+     *
+     * @return RequestException
+     */
+    public static function wrapException(RequestInterface $request, \Exception $e)
+    {
+        return $e instanceof RequestException
+            ? $e
+            : new RequestException($e->getMessage(), $request, null, $e);
+    }
+
+    /**
+     * Factory method to create a new exception with a normalized error message
+     *
+     * @param RequestInterface  $request  Request
+     * @param ResponseInterface $response Response received
+     * @param \Exception        $previous Previous exception
+     * @param array             $ctx      Optional handler context.
+     *
+     * @return self
+     */
+    public static function create(
+        RequestInterface $request,
+        ResponseInterface $response = null,
+        \Exception $previous = null,
+        array $ctx = []
+    ) {
+        if (!$response) {
+            return new self(
+                'Error completing request',
+                $request,
+                null,
+                $previous,
+                $ctx
+            );
+        }
+
+        $level = (int) floor($response->getStatusCode() / 100);
+        if ($level === 4) {
+            $label = 'Client error';
+            $className = __NAMESPACE__ . '\\ClientException';
+        } elseif ($level === 5) {
+            $label = 'Server error';
+            $className = __NAMESPACE__ . '\\ServerException';
+        } else {
+            $label = 'Unsuccessful request';
+            $className = __CLASS__;
+        }
+
+        $uri = $request->getUri();
+        $uri = static::obfuscateUri($uri);
+
+        // Server Error: `GET /` resulted in a `404 Not Found` response:
+        // <html> ... (truncated)
+        $message = sprintf(
+            '%s: `%s` resulted in a `%s` response',
+            $label,
+            $request->getMethod() . ' ' . $uri,
+            $response->getStatusCode() . ' ' . $response->getReasonPhrase()
+        );
+
+        $summary = static::getResponseBodySummary($response);
+
+        if ($summary !== null) {
+            $message .= ":\n{$summary}\n";
+        }
+
+        return new $className($message, $request, $response, $previous, $ctx);
+    }
+
+    /**
+     * Get a short summary of the response
+     *
+     * Will return `null` if the response is not printable.
+     *
+     * @param ResponseInterface $response
+     *
+     * @return string|null
+     */
+    public static function getResponseBodySummary(ResponseInterface $response)
+    {
+        $body = $response->getBody();
+
+        if (!$body->isSeekable()) {
+            return null;
+        }
+
+        $size = $body->getSize();
+        $summary = $body->read(120);
+        $body->rewind();
+
+        if ($size > 120) {
+            $summary .= ' (truncated...)';
+        }
+
+        // Matches any printable character, including unicode characters:
+        // letters, marks, numbers, punctuation, spacing, and separators.
+        if (preg_match('/[^\pL\pM\pN\pP\pS\pZ\n\r\t]/', $summary)) {
+            return null;
+        }
+
+        return $summary;
+    }
+
+    /**
+     * Obfuscates URI if there is an username and a password present
+     *
+     * @param UriInterface $uri
+     *
+     * @return UriInterface
+     */
+    private static function obfuscateUri($uri)
+    {
+        $userInfo = $uri->getUserInfo();
+
+        if (false !== ($pos = strpos($userInfo, ':'))) {
+            return $uri->withUserInfo(substr($userInfo, 0, $pos), '***');
+        }
+
+        return $uri;
+    }
+
+    /**
+     * Get the request that caused the exception
+     *
+     * @return RequestInterface
+     */
+    public function getRequest()
+    {
+        return $this->request;
+    }
+
+    /**
+     * Get the associated response
+     *
+     * @return ResponseInterface|null
+     */
+    public function getResponse()
+    {
+        return $this->response;
+    }
+
+    /**
+     * Check if a response was received
+     *
+     * @return bool
+     */
+    public function hasResponse()
+    {
+        return $this->response !== null;
+    }
+
+    /**
+     * Get contextual information about the error from the underlying handler.
+     *
+     * The contents of this array will vary depending on which handler you are
+     * using. It may also be just an empty array. Relying on this data will
+     * couple you to a specific handler, but can give more debug information
+     * when needed.
+     *
+     * @return array
+     */
+    public function getHandlerContext()
+    {
+        return $this->handlerContext;
+    }
+}

vendor/guzzlehttp/guzzle/src/Exception/SeekException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Exception thrown when a seek fails on a stream.
+ */
+class SeekException extends \RuntimeException implements GuzzleException
+{
+    private $stream;
+
+    public function __construct(StreamInterface $stream, $pos = 0, $msg = '')
+    {
+        $this->stream = $stream;
+        $msg = $msg ?: 'Could not seek the stream to position ' . $pos;
+        parent::__construct($msg);
+    }
+
+    /**
+     * @return StreamInterface
+     */
+    public function getStream()
+    {
+        return $this->stream;
+    }
+}

vendor/guzzlehttp/guzzle/src/Exception/ServerException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+/**
+ * Exception when a server error is encountered (5xx codes)
+ */
+class ServerException extends BadResponseException {}

vendor/guzzlehttp/guzzle/src/Exception/TooManyRedirectsException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+class TooManyRedirectsException extends RequestException {}

vendor/guzzlehttp/guzzle/src/Exception/TransferException.php

+<?php
+namespace GuzzleHttp\Exception;
+
+class TransferException extends \RuntimeException implements GuzzleException {}

vendor/guzzlehttp/guzzle/src/Handler/CurlFactoryInterface.php

+<?php
+namespace GuzzleHttp\Handler;
+
+use Psr\Http\Message\RequestInterface;
+
+interface CurlFactoryInterface
+{
+    /**
+     * Creates a cURL handle resource.
+     *
+     * @param RequestInterface $request Request
+     * @param array            $options Transfer options
+     *
+     * @return EasyHandle
+     * @throws \RuntimeException when an option cannot be applied
+     */
+    public function create(RequestInterface $request, array $options);
+
+    /**
+     * Release an easy handle, allowing it to be reused or closed.
+     *
+     * This function must call unset on the easy handle's "handle" property.
+     *
+     * @param EasyHandle $easy
+     */
+    public function release(EasyHandle $easy);
+}

vendor/guzzlehttp/guzzle/src/Handler/CurlHandler.php

+<?php
+namespace GuzzleHttp\Handler;
+
+use GuzzleHttp\Psr7;
+use Psr\Http\Message\RequestInterface;
+
+/**
+ * HTTP handler that uses cURL easy handles as a transport layer.
+ *
+ * When using the CurlHandler, custom curl options can be specified as an
+ * associative array of curl option constants mapping to values in the
+ * **curl** key of the "client" key of the request.
+ */
+class CurlHandler
+{
+    /** @var CurlFactoryInterface */
+    private $factory;
+
+    /**
+     * Accepts an associative array of options:
+     *
+     * - factory: Optional curl factory used to create cURL handles.
+     *
+     * @param array $options Array of options to use with the handler
+     */
+    public function __construct(array $options = [])
+    {
+        $this->factory = isset($options['handle_factory'])
+            ? $options['handle_factory']
+            : new CurlFactory(3);
+    }
+
+    public function __invoke(RequestInterface $request, array $options)
+    {
+        if (isset($options['delay'])) {
+            usleep($options['delay'] * 1000);
+        }
+
+        $easy = $this->factory->create($request, $options);
+        curl_exec($easy->handle);
+        $easy->errno = curl_errno($easy->handle);
+
+        return CurlFactory::finish($this, $easy, $this->factory);
+    }
+}

vendor/guzzlehttp/guzzle/src/Handler/CurlMultiHandler.php

+<?php
+namespace GuzzleHttp\Handler;
+
+use GuzzleHttp\Promise as P;
+use GuzzleHttp\Promise\Promise;
+use GuzzleHttp\Psr7;
+use Psr\Http\Message\RequestInterface;
+
+/**
+ * Returns an asynchronous response using curl_multi_* functions.
+ *
+ * When using the CurlMultiHandler, custom curl options can be specified as an
+ * associative array of curl option constants mapping to values in the
+ * **curl** key of the provided request options.
+ *
+ * @property resource $_mh Internal use only. Lazy loaded multi-handle.
+ */
+class CurlMultiHandler
+{
+    /** @var CurlFactoryInterface */
+    private $factory;
+    private $selectTimeout;
+    private $active;
+    private $handles = [];
+    private $delays = [];
+
+    /**
+     * This handler accepts the following options:
+     *
+     * - handle_factory: An optional factory  used to create curl handles
+     * - select_timeout: Optional timeout (in seconds) to block before timing
+     *   out while selecting curl handles. Defaults to 1 second.
+     *
+     * @param array $options
+     */
+    public function __construct(array $options = [])
+    {
+        $this->factory = isset($options['handle_factory'])
+            ? $options['handle_factory'] : new CurlFactory(50);
+        $this->selectTimeout = isset($options['select_timeout'])
+            ? $options['select_timeout'] : 1;
+    }
+
+    public function __get($name)
+    {
+        if ($name === '_mh') {
+            return $this->_mh = curl_multi_init();
+        }
+
+        throw new \BadMethodCallException();
+    }
+
+    public function __destruct()
+    {
+        if (isset($this->_mh)) {
+            curl_multi_close($this->_mh);
+            unset($this->_mh);
+        }
+    }
+
+    public function __invoke(RequestInterface $request, array $options)
+    {
+        $easy = $this->factory->create($request, $options);
+        $id = (int) $easy->handle;
+
+        $promise = new Promise(
+            [$this, 'execute'],
+            function () use ($id) { return $this->cancel($id); }
+        );
+
+        $this->addRequest(['easy' => $easy, 'deferred' => $promise]);
+
+        return $promise;
+    }
+
+    /**
+     * Ticks the curl event loop.
+     */
+    public function tick()
+    {
+        // Add any delayed handles if needed.
+        if ($this->delays) {
+            $currentTime = microtime(true);
+            foreach ($this->delays as $id => $delay) {
+                if ($currentTime >= $delay) {
+                    unset($this->delays[$id]);
+                    curl_multi_add_handle(
+                        $this->_mh,
+                        $this->handles[$id]['easy']->handle
+                    );
+                }
+            }
+        }
+
+        // Step through the task queue which may add additional requests.
+        P\queue()->run();
+
+        if ($this->active &&
+            curl_multi_select($this->_mh, $this->selectTimeout) === -1
+        ) {
+            // Perform a usleep if a select returns -1.
+            // See: https://bugs.php.net/bug.php?id=61141
+            usleep(250);
+        }
+
+        while (curl_multi_exec($this->_mh, $this->active) === CURLM_CALL_MULTI_PERFORM);
+
+        $this->processMessages();
+    }
+
+    /**
+     * Runs until all outstanding connections have completed.
+     */
+    public function execute()
+    {
+        $queue = P\queue();
+
+        while ($this->handles || !$queue->isEmpty()) {
+            // If there are no transfers, then sleep for the next delay
+            if (!$this->active && $this->delays) {
+                usleep($this->timeToNext());
+            }
+            $this->tick();
+        }
+    }
+
+    private function addRequest(array $entry)
+    {
+        $easy = $entry['easy'];
+        $id = (int) $easy->handle;
+        $this->handles[$id] = $entry;
+        if (empty($easy->options['delay'])) {
+            curl_multi_add_handle($this->_mh, $easy->handle);
+        } else {
+            $this->delays[$id] = microtime(true) + ($easy->options['delay'] / 1000);
+        }
+    }
+
+    /**
+     * Cancels a handle from sending and removes references to it.
+     *
+     * @param int $id Handle ID to cancel and remove.
+     *
+     * @return bool True on success, false on failure.
+     */
+    private function cancel($id)
+    {
+        // Cannot cancel if it has been processed.
+        if (!isset($this->handles[$id])) {
+            return false;
+        }
+
+        $handle = $this->handles[$id]['easy']->handle;
+        unset($this->delays[$id], $this->handles[$id]);
+        curl_multi_remove_handle($this->_mh, $handle);
+        curl_close($handle);
+
+        return true;
+    }
+
+    private function processMessages()
+    {
+        while ($done = curl_multi_info_read($this->_mh)) {
+            $id = (int) $done['handle'];
+            curl_multi_remove_handle($this->_mh, $done['handle']);
+
+            if (!isset($this->handles[$id])) {
+                // Probably was cancelled.
+                continue;
+            }
+
+            $entry = $this->handles[$id];
+            unset($this->handles[$id], $this->delays[$id]);
+            $entry['easy']->errno = $done['result'];
+            $entry['deferred']->resolve(
+                CurlFactory::finish(
+                    $this,
+                    $entry['easy'],
+                    $this->factory
+                )
+            );
+        }
+    }
+
+    private function timeToNext()
+    {
+        $currentTime = microtime(true);
+        $nextTime = PHP_INT_MAX;
+        foreach ($this->delays as $time) {
+            if ($time < $nextTime) {
+                $nextTime = $time;
+            }
+        }
+
+        return max(0, $nextTime - $currentTime) * 1000000;
+    }
+}

vendor/guzzlehttp/guzzle/src/Handler/EasyHandle.php

+<?php
+namespace GuzzleHttp\Handler;
+
+use GuzzleHttp\Psr7\Response;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Represents a cURL easy handle and the data it populates.
+ *
+ * @internal
+ */
+final class EasyHandle
+{
+    /** @var resource cURL resource */
+    public $handle;
+
+    /** @var StreamInterface Where data is being written */
+    public $sink;
+
+    /** @var array Received HTTP headers so far */
+    public $headers = [];
+
+    /** @var ResponseInterface Received response (if any) */
+    public $response;
+
+    /** @var RequestInterface Request being sent */
+    public $request;
+
+    /** @var array Request options */
+    public $options = [];
+
+    /** @var int cURL error number (if any) */
+    public $errno = 0;
+
+    /** @var \Exception Exception during on_headers (if any) */
+    public $onHeadersException;
+
+    /**
+     * Attach a response to the easy handle based on the received headers.
+     *
+     * @throws \RuntimeException if no headers have been received.
+     */
+    public function createResponse()
+    {
+        if (empty($this->headers)) {
+            throw new \RuntimeException('No headers have been received');
+        }
+
+        // HTTP-version SP status-code SP reason-phrase
+        $startLine = explode(' ', array_shift($this->headers), 3);
+        $headers = \GuzzleHttp\headers_from_lines($this->headers);
+        $normalizedKeys = \GuzzleHttp\normalize_header_keys($headers);
+
+        if (!empty($this->options['decode_content'])
+            && isset($normalizedKeys['content-encoding'])
+        ) {
+            $headers['x-encoded-content-encoding']
+                = $headers[$normalizedKeys['content-encoding']];
+            unset($headers[$normalizedKeys['content-encoding']]);
+            if (isset($normalizedKeys['content-length'])) {
+                $headers['x-encoded-content-length']
+                    = $headers[$normalizedKeys['content-length']];
+
+                $bodyLength = (int) $this->sink->getSize();
+                if ($bodyLength) {
+                    $headers[$normalizedKeys['content-length']] = $bodyLength;
+                } else {
+                    unset($headers[$normalizedKeys['content-length']]);
+                }
+            }
+        }
+
+        // Attach a response to the easy handle with the parsed headers.
+        $this->response = new Response(
+            $startLine[1],
+            $headers,
+            $this->sink,
+            substr($startLine[0], 5),
+            isset($startLine[2]) ? (string) $startLine[2] : null
+        );
+    }
+
+    public function __get($name)
+    {
+        $msg = $name === 'handle'
+            ? 'The EasyHandle has been released'
+            : 'Invalid property: ' . $name;
+        throw new \BadMethodCallException($msg);
+    }
+}

vendor/guzzlehttp/guzzle/src/Handler/MockHandler.php

+<?php
+namespace GuzzleHttp\Handler;
+
+use GuzzleHttp\HandlerStack;
+use GuzzleHttp\Promise\PromiseInterface;
+use GuzzleHttp\Promise\RejectedPromise;
+use GuzzleHttp\TransferStats;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Handler that returns responses or throw exceptions from a queue.
+ */
+class MockHandler implements \Countable
+{
+    private $queue;
+    private $lastRequest;
+    private $lastOptions;
+    private $onFulfilled;
+    private $onRejected;
+
+    /**
+     * Creates a new MockHandler that uses the default handler stack list of
+     * middlewares.
+     *
+     * @param array $queue Array of responses, callables, or exceptions.
+     * @param callable $onFulfilled Callback to invoke when the return value is fulfilled.
+     * @param callable $onRejected  Callback to invoke when the return value is rejected.
+     *
+     * @return HandlerStack
+     */
+    public static function createWithMiddleware(
+        array $queue = null,
+        callable $onFulfilled = null,
+        callable $onRejected = null
+    ) {
+        return HandlerStack::create(new self($queue, $onFulfilled, $onRejected));
+    }
+
+    /**
+     * The passed in value must be an array of
+     * {@see Psr7\Http\Message\ResponseInterface} objects, Exceptions,
+     * callables, or Promises.
+     *
+     * @param array $queue
+     * @param callable $onFulfilled Callback to invoke when the return value is fulfilled.
+     * @param callable $onRejected  Callback to invoke when the return value is rejected.
+     */
+    public function __construct(
+        array $queue = null,
+        callable $onFulfilled = null,
+        callable $onRejected = null
+    ) {
+        $this->onFulfilled = $onFulfilled;
+        $this->onRejected = $onRejected;
+
+        if ($queue) {
+            call_user_func_array([$this, 'append'], $queue);
+        }
+    }
+
+    public function __invoke(RequestInterface $request, array $options)
+    {
+        if (!$this->queue) {
+            throw new \OutOfBoundsException('Mock queue is empty');
+        }
+
+        if (isset($options['delay'])) {
+            usleep($options['delay'] * 1000);
+        }
+
+        $this->lastRequest = $request;
+        $this->lastOptions = $options;
+        $response = array_shift($this->queue);
+
+        if (is_callable($response)) {
+            $response = call_user_func($response, $request, $options);
+        }
+
+        $response = $response instanceof \Exception
+            ? new RejectedPromise($response)
+            : \GuzzleHttp\Promise\promise_for($response);
+
+        return $response->then(
+            function ($value) use ($request, $options) {
+                $this->invokeStats($request, $options, $value);
+                if ($this->onFulfilled) {
+                    call_user_func($this->onFulfilled, $value);
+                }
+                if (isset($options['sink'])) {
+                    $contents = (string) $value->getBody();
+                    $sink = $options['sink'];
+
+                    if (is_resource($sink)) {
+                        fwrite($sink, $contents);
+                    } elseif (is_string($sink)) {
+                        file_put_contents($sink, $contents);
+                    } elseif ($sink instanceof \Psr\Http\Message\StreamInterface) {
+                        $sink->write($contents);
+                    }
+                }
+
+                return $value;
+            },
+            function ($reason) use ($request, $options) {
+                $this->invokeStats($request, $options, null, $reason);
+                if ($this->onRejected) {
+                    call_user_func($this->onRejected, $reason);
+                }
+                return new RejectedPromise($reason);
+            }
+        );
+    }
+
+    /**
+     * Adds one or more variadic requests, exceptions, callables, or promises
+     * to the queue.
+     */
+    public function append()
+    {
+        foreach (func_get_args() as $value) {
+            if ($value instanceof ResponseInterface
+                || $value instanceof \Exception
+                || $value instanceof PromiseInterface
+                || is_callable($value)
+            ) {
+                $this->queue[] = $value;
+            } else {
+                throw new \InvalidArgumentException('Expected a response or '
+                    . 'exception. Found ' . \GuzzleHttp\describe_type($value));
+            }
+        }
+    }
+
+    /**
+     * Get the last received request.
+     *
+     * @return RequestInterface
+     */
+    public function getLastRequest()
+    {
+        return $this->lastRequest;
+    }
+
+    /**
+     * Get the last received request options.
+     *
+     * @return RequestInterface
+     */
+    public function getLastOptions()
+    {
+        return $this->lastOptions;
+    }
+
+    /**
+     * Returns the number of remaining items in the queue.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->queue);
+    }
+
+    private function invokeStats(
+        RequestInterface $request,
+        array $options,
+        ResponseInterface $response = null,
+        $reason = null
+    ) {
+        if (isset($options['on_stats'])) {
+            $stats = new TransferStats($request, $response, 0, $reason);
+            call_user_func($options['on_stats'], $stats);
+        }
+    }
+}

vendor/guzzlehttp/guzzle/src/Handler/Proxy.php

+<?php
+namespace GuzzleHttp\Handler;
+
+use GuzzleHttp\RequestOptions;
+use Psr\Http\Message\RequestInterface;
+
+/**
+ * Provides basic proxies for handlers.
+ */
+class Proxy
+{
+    /**
+     * Sends synchronous requests to a specific handler while sending all other
+     * requests to another handler.
+     *
+     * @param callable $default Handler used for normal responses
+     * @param callable $sync    Handler used for synchronous responses.
+     *
+     * @return callable Returns the composed handler.
+     */
+    public static function wrapSync(
+        callable $default,
+        callable $sync
+    ) {
+        return function (RequestInterface $request, array $options) use ($default, $sync) {
+            return empty($options[RequestOptions::SYNCHRONOUS])
+                ? $default($request, $options)
+                : $sync($request, $options);
+        };
+    }
+
+    /**
+     * Sends streaming requests to a streaming compatible handler while sending
+     * all other requests to a default handler.
+     *
+     * This, for example, could be useful for taking advantage of the
+     * performance benefits of curl while still supporting true streaming
+     * through the StreamHandler.
+     *
+     * @param callable $default   Handler used for non-streaming responses
+     * @param callable $streaming Handler used for streaming responses
+     *
+     * @return callable Returns the composed handler.
+     */
+    public static function wrapStreaming(
+        callable $default,
+        callable $streaming
+    ) {
+        return function (RequestInterface $request, array $options) use ($default, $streaming) {
+            return empty($options['stream'])
+                ? $default($request, $options)
+                : $streaming($request, $options);
+        };
+    }
+}

vendor/guzzlehttp/guzzle/src/HandlerStack.php

+<?php
+namespace GuzzleHttp;
+
+use Psr\Http\Message\RequestInterface;
+
+/**
+ * Creates a composed Guzzle handler function by stacking middlewares on top of
+ * an HTTP handler function.
+ */
+class HandlerStack
+{
+    /** @var callable */
+    private $handler;
+
+    /** @var array */
+    private $stack = [];
+
+    /** @var callable|null */
+    private $cached;
+
+    /**
+     * Creates a default handler stack that can be used by clients.
+     *
+     * The returned handler will wrap the provided handler or use the most
+     * appropriate default handler for you system. The returned HandlerStack has
+     * support for cookies, redirects, HTTP error exceptions, and preparing a body
+     * before sending.
+     *
+     * The returned handler stack can be passed to a client in the "handler"
+     * option.
+     *
+     * @param callable $handler HTTP handler function to use with the stack. If no
+     *                          handler is provided, the best handler for your
+     *                          system will be utilized.
+     *
+     * @return HandlerStack
+     */
+    public static function create(callable $handler = null)
+    {
+        $stack = new self($handler ?: choose_handler());
+        $stack->push(Middleware::httpErrors(), 'http_errors');
+        $stack->push(Middleware::redirect(), 'allow_redirects');
+        $stack->push(Middleware::cookies(), 'cookies');
+        $stack->push(Middleware::prepareBody(), 'prepare_body');
+
+        return $stack;
+    }
+
+    /**
+     * @param callable $handler Underlying HTTP handler.
+     */
+    public function __construct(callable $handler = null)
+    {
+        $this->handler = $handler;
+    }
+
+    /**
+     * Invokes the handler stack as a composed handler
+     *
+     * @param RequestInterface $request
+     * @param array            $options
+     */
+    public function __invoke(RequestInterface $request, array $options)
+    {
+        $handler = $this->resolve();
+
+        return $handler($request, $options);
+    }
+
+    /**
+     * Dumps a string representation of the stack.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        $depth = 0;
+        $stack = [];
+        if ($this->handler) {
+            $stack[] = "0) Handler: " . $this->debugCallable($this->handler);
+        }
+
+        $result = '';
+        foreach (array_reverse($this->stack) as $tuple) {
+            $depth++;
+            $str = "{$depth}) Name: '{$tuple[1]}', ";
+            $str .= "Function: " . $this->debugCallable($tuple[0]);
+            $result = "> {$str}\n{$result}";
+            $stack[] = $str;
+        }
+
+        foreach (array_keys($stack) as $k) {
+            $result .= "< {$stack[$k]}\n";
+        }
+
+        return $result;
+    }
+
+    /**
+     * Set the HTTP handler that actually returns a promise.
+     *
+     * @param callable $handler Accepts a request and array of options and
+     *                          returns a Promise.
+     */
+    public function setHandler(callable $handler)
+    {
+        $this->handler = $handler;
+        $this->cached = null;
+    }
+
+    /**
+     * Returns true if the builder has a handler.
+     *
+     * @return bool
+     */
+    public function hasHandler()
+    {
+        return (bool) $this->handler;
+    }
+
+    /**
+     * Unshift a middleware to the bottom of the stack.
+     *
+     * @param callable $middleware Middleware function
+     * @param string   $name       Name to register for this middleware.
+     */
+    public function unshift(callable $middleware, $name = null)
+    {
+        array_unshift($this->stack, [$middleware, $name]);
+        $this->cached = null;
+    }
+
+    /**
+     * Push a middleware to the top of the stack.
+     *
+     * @param callable $middleware Middleware function
+     * @param string   $name       Name to register for this middleware.
+     */
+    public function push(callable $middleware, $name = '')
+    {
+        $this->stack[] = [$middleware, $name];
+        $this->cached = null;
+    }
+
+    /**
+     * Add a middleware before another middleware by name.
+     *
+     * @param string   $findName   Middleware to find
+     * @param callable $middleware Middleware function
+     * @param string   $withName   Name to register for this middleware.
+     */
+    public function before($findName, callable $middleware, $withName = '')
+    {
+        $this->splice($findName, $withName, $middleware, true);
+    }
+
+    /**
+     * Add a middleware after another middleware by name.
+     *
+     * @param string   $findName   Middleware to find
+     * @param callable $middleware Middleware function
+     * @param string   $withName   Name to register for this middleware.
+     */
+    public function after($findName, callable $middleware, $withName = '')
+    {
+        $this->splice($findName, $withName, $middleware, false);
+    }
+
+    /**
+     * Remove a middleware by instance or name from the stack.
+     *
+     * @param callable|string $remove Middleware to remove by instance or name.
+     */
+    public function remove($remove)
+    {
+        $this->cached = null;
+        $idx = is_callable($remove) ? 0 : 1;
+        $this->stack = array_values(array_filter(
+            $this->stack,
+            function ($tuple) use ($idx, $remove) {
+                return $tuple[$idx] !== $remove;
+            }
+        ));
+    }
+
+    /**
+     * Compose the middleware and handler into a single callable function.
+     *
+     * @return callable
+     */
+    public function resolve()
+    {
+        if (!$this->cached) {
+            if (!($prev = $this->handler)) {
+                throw new \LogicException('No handler has been specified');
+            }
+
+            foreach (array_reverse($this->stack) as $fn) {
+                $prev = $fn[0]($prev);
+            }
+
+            $this->cached = $prev;
+        }
+
+        return $this->cached;
+    }
+
+    /**
+     * @param $name
+     * @return int
+     */
+    private function findByName($name)
+    {
+        foreach ($this->stack as $k => $v) {
+            if ($v[1] === $name) {
+                return $k;
+            }
+        }
+
+        throw new \InvalidArgumentException("Middleware not found: $name");
+    }
+
+    /**
+     * Splices a function into the middleware list at a specific position.
+     *
+     * @param          $findName
+     * @param          $withName
+     * @param callable $middleware
+     * @param          $before
+     */
+    private function splice($findName, $withName, callable $middleware, $before)
+    {
+        $this->cached = null;
+        $idx = $this->findByName($findName);
+        $tuple = [$middleware, $withName];
+
+        if ($before) {
+            if ($idx === 0) {
+                array_unshift($this->stack, $tuple);
+            } else {
+                $replacement = [$tuple, $this->stack[$idx]];
+                array_splice($this->stack, $idx, 1, $replacement);
+            }
+        } elseif ($idx === count($this->stack) - 1) {
+            $this->stack[] = $tuple;
+        } else {
+            $replacement = [$this->stack[$idx], $tuple];
+            array_splice($this->stack, $idx, 1, $replacement);
+        }
+    }
+
+    /**
+     * Provides a debug string for a given callable.
+     *
+     * @param array|callable $fn Function to write as a string.
+     *
+     * @return string
+     */
+    private function debugCallable($fn)
+    {
+        if (is_string($fn)) {
+            return "callable({$fn})";
+        }
+
+        if (is_array($fn)) {
+            return is_string($fn[0])
+                ? "callable({$fn[0]}::{$fn[1]})"
+                : "callable(['" . get_class($fn[0]) . "', '{$fn[1]}'])";
+        }
+
+        return 'callable(' . spl_object_hash($fn) . ')';
+    }
+}

vendor/guzzlehttp/guzzle/src/MessageFormatter.php

+<?php
+namespace GuzzleHttp;
+
+use Psr\Http\Message\MessageInterface;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Formats log messages using variable substitutions for requests, responses,
+ * and other transactional data.
+ *
+ * The following variable substitutions are supported:
+ *
+ * - {request}:        Full HTTP request message
+ * - {response}:       Full HTTP response message
+ * - {ts}:             ISO 8601 date in GMT
+ * - {date_iso_8601}   ISO 8601 date in GMT
+ * - {date_common_log} Apache common log date using the configured timezone.
+ * - {host}:           Host of the request
+ * - {method}:         Method of the request
+ * - {uri}:            URI of the request
+ * - {host}:           Host of the request
+ * - {version}:        Protocol version
+ * - {target}:         Request target of the request (path + query + fragment)
+ * - {hostname}:       Hostname of the machine that sent the request
+ * - {code}:           Status code of the response (if available)
+ * - {phrase}:         Reason phrase of the response  (if available)
+ * - {error}:          Any error messages (if available)
+ * - {req_header_*}:   Replace `*` with the lowercased name of a request header to add to the message
+ * - {res_header_*}:   Replace `*` with the lowercased name of a response header to add to the message
+ * - {req_headers}:    Request headers
+ * - {res_headers}:    Response headers
+ * - {req_body}:       Request body
+ * - {res_body}:       Response body
+ */
+class MessageFormatter
+{
+    /**
+     * Apache Common Log Format.
+     * @link http://httpd.apache.org/docs/2.4/logs.html#common
+     * @var string
+     */
+    const CLF = "{hostname} {req_header_User-Agent} - [{date_common_log}] \"{method} {target} HTTP/{version}\" {code} {res_header_Content-Length}";
+    const DEBUG = ">>>>>>>>\n{request}\n<<<<<<<<\n{response}\n--------\n{error}";
+    const SHORT = '[{ts}] "{method} {target} HTTP/{version}" {code}';
+
+    /** @var string Template used to format log messages */
+    private $template;
+
+    /**
+     * @param string $template Log message template
+     */
+    public function __construct($template = self::CLF)
+    {
+        $this->template = $template ?: self::CLF;
+    }
+
+    /**
+     * Returns a formatted message string.
+     *
+     * @param RequestInterface  $request  Request that was sent
+     * @param ResponseInterface $response Response that was received
+     * @param \Exception        $error    Exception that was received
+     *
+     * @return string
+     */
+    public function format(
+        RequestInterface $request,
+        ResponseInterface $response = null,
+        \Exception $error = null
+    ) {
+        $cache = [];
+
+        return preg_replace_callback(
+            '/{\s*([A-Za-z_\-\.0-9]+)\s*}/',
+            function (array $matches) use ($request, $response, $error, &$cache) {
+
+                if (isset($cache[$matches[1]])) {
+                    return $cache[$matches[1]];
+                }
+
+                $result = '';
+                switch ($matches[1]) {
+                    case 'request':
+                        $result = Psr7\str($request);
+                        break;
+                    case 'response':
+                        $result = $response ? Psr7\str($response) : '';
+                        break;
+                    case 'req_headers':
+                        $result = trim($request->getMethod()
+                                . ' ' . $request->getRequestTarget())
+                            . ' HTTP/' . $request->getProtocolVersion() . "\r\n"
+                            . $this->headers($request);
+                        break;
+                    case 'res_headers':
+                        $result = $response ?
+                            sprintf(
+                                'HTTP/%s %d %s',
+                                $response->getProtocolVersion(),
+                                $response->getStatusCode(),
+                                $response->getReasonPhrase()
+                            ) . "\r\n" . $this->headers($response)
+                            : 'NULL';
+                        break;
+                    case 'req_body':
+                        $result = $request->getBody();
+                        break;
+                    case 'res_body':
+                        $result = $response ? $response->getBody() : 'NULL';
+                        break;
+                    case 'ts':
+                    case 'date_iso_8601':
+                        $result = gmdate('c');
+                        break;
+                    case 'date_common_log':
+                        $result = date('d/M/Y:H:i:s O');
+                        break;
+                    case 'method':
+                        $result = $request->getMethod();
+                        break;
+                    case 'version':
+                        $result = $request->getProtocolVersion();
+                        break;
+                    case 'uri':
+                    case 'url':
+                        $result = $request->getUri();
+                        break;
+                    case 'target':
+                        $result = $request->getRequestTarget();
+                        break;
+                    case 'req_version':
+                        $result = $request->getProtocolVersion();
+                        break;
+                    case 'res_version':
+                        $result = $response
+                            ? $response->getProtocolVersion()
+                            : 'NULL';
+                        break;
+                    case 'host':
+                        $result = $request->getHeaderLine('Host');
+                        break;
+                    case 'hostname':
+                        $result = gethostname();
+                        break;
+                    case 'code':
+                        $result = $response ? $response->getStatusCode() : 'NULL';
+                        break;
+                    case 'phrase':
+                        $result = $response ? $response->getReasonPhrase() : 'NULL';
+                        break;
+                    case 'error':
+                        $result = $error ? $error->getMessage() : 'NULL';
+                        break;
+                    default:
+                        // handle prefixed dynamic headers
+                        if (strpos($matches[1], 'req_header_') === 0) {
+                            $result = $request->getHeaderLine(substr($matches[1], 11));
+                        } elseif (strpos($matches[1], 'res_header_') === 0) {
+                            $result = $response
+                                ? $response->getHeaderLine(substr($matches[1], 11))
+                                : 'NULL';
+                        }
+                }
+
+                $cache[$matches[1]] = $result;
+                return $result;
+            },
+            $this->template
+        );
+    }
+
+    private function headers(MessageInterface $message)
+    {
+        $result = '';
+        foreach ($message->getHeaders() as $name => $values) {
+            $result .= $name . ': ' . implode(', ', $values) . "\r\n";
+        }
+
+        return trim($result);
+    }
+}

vendor/guzzlehttp/guzzle/src/Middleware.php

+<?php
+namespace GuzzleHttp;
+
+use GuzzleHttp\Cookie\CookieJarInterface;
+use GuzzleHttp\Exception\RequestException;
+use GuzzleHttp\Promise\RejectedPromise;
+use GuzzleHttp\Psr7;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Log\LoggerInterface;
+use Psr\Log\LogLevel;
+
+/**
+ * Functions used to create and wrap handlers with handler middleware.
+ */
+final class Middleware
+{
+    /**
+     * Middleware that adds cookies to requests.
+     *
+     * The options array must be set to a CookieJarInterface in order to use
+     * cookies. This is typically handled for you by a client.
+     *
+     * @return callable Returns a function that accepts the next handler.
+     */
+    public static function cookies()
+    {
+        return function (callable $handler) {
+            return function ($request, array $options) use ($handler) {
+                if (empty($options['cookies'])) {
+                    return $handler($request, $options);
+                } elseif (!($options['cookies'] instanceof CookieJarInterface)) {
+                    throw new \InvalidArgumentException('cookies must be an instance of GuzzleHttp\Cookie\CookieJarInterface');
+                }
+                $cookieJar = $options['cookies'];
+                $request = $cookieJar->withCookieHeader($request);
+                return $handler($request, $options)
+                    ->then(function ($response) use ($cookieJar, $request) {
+                        $cookieJar->extractCookies($request, $response);
+                        return $response;
+                    }
+                );
+            };
+        };
+    }
+
+    /**
+     * Middleware that throws exceptions for 4xx or 5xx responses when the
+     * "http_error" request option is set to true.
+     *
+     * @return callable Returns a function that accepts the next handler.
+     */
+    public static function httpErrors()
+    {
+        return function (callable $handler) {
+            return function ($request, array $options) use ($handler) {
+                if (empty($options['http_errors'])) {
+                    return $handler($request, $options);
+                }
+                return $handler($request, $options)->then(
+                    function (ResponseInterface $response) use ($request, $handler) {
+                        $code = $response->getStatusCode();
+                        if ($code < 400) {
+                            return $response;
+                        }
+                        throw RequestException::create($request, $response);
+                    }
+                );
+            };
+        };
+    }
+
+    /**
+     * Middleware that pushes history data to an ArrayAccess container.
+     *
+     * @param array $container Container to hold the history (by reference).
+     *
+     * @return callable Returns a function that accepts the next handler.
+     * @throws \InvalidArgumentException if container is not an array or ArrayAccess.
+     */
+    public static function history(&$container)
+    {
+        if (!is_array($container) && !$container instanceof \ArrayAccess) {
+            throw new \InvalidArgumentException('history container must be an array or object implementing ArrayAccess');
+        }
+
+        return function (callable $handler) use (&$container) {
+            return function ($request, array $options) use ($handler, &$container) {
+                return $handler($request, $options)->then(
+                    function ($value) use ($request, &$container, $options) {
+                        $container[] = [
+                            'request'  => $request,
+                            'response' => $value,
+                            'error'    => null,
+                            'options'  => $options
+                        ];
+                        return $value;
+                    },
+                    function ($reason) use ($request, &$container, $options) {
+                        $container[] = [
+                            'request'  => $request,
+                            'response' => null,
+                            'error'    => $reason,
+                            'options'  => $options
+                        ];
+                        return new RejectedPromise($reason);
+                    }
+                );
+            };
+        };
+    }
+
+    /**
+     * Middleware that invokes a callback before and after sending a request.
+     *
+     * The provided listener cannot modify or alter the response. It simply
+     * "taps" into the chain to be notified before returning the promise. The
+     * before listener accepts a request and options array, and the after
+     * listener accepts a request, options array, and response promise.
+     *
+     * @param callable $before Function to invoke before forwarding the request.
+     * @param callable $after  Function invoked after forwarding.
+     *
+     * @return callable Returns a function that accepts the next handler.
+     */
+    public static function tap(callable $before = null, callable $after = null)
+    {
+        return function (callable $handler) use ($before, $after) {
+            return function ($request, array $options) use ($handler, $before, $after) {
+                if ($before) {
+                    $before($request, $options);
+                }
+                $response = $handler($request, $options);
+                if ($after) {
+                    $after($request, $options, $response);
+                }
+                return $response;
+            };
+        };
+    }
+
+    /**
+     * Middleware that handles request redirects.
+     *
+     * @return callable Returns a function that accepts the next handler.
+     */
+    public static function redirect()
+    {
+        return function (callable $handler) {
+            return new RedirectMiddleware($handler);
+        };
+    }
+
+    /**
+     * Middleware that retries requests based on the boolean result of
+     * invoking the provided "decider" function.
+     *
+     * If no delay function is provided, a simple implementation of exponential
+     * backoff will be utilized.
+     *
+     * @param callable $decider Function that accepts the number of retries,
+     *                          a request, [response], and [exception] and
+     *                          returns true if the request is to be retried.
+     * @param callable $delay   Function that accepts the number of retries and
+     *                          returns the number of milliseconds to delay.
+     *
+     * @return callable Returns a function that accepts the next handler.
+     */
+    public static function retry(callable $decider, callable $delay = null)
+    {
+        return function (callable $handler) use ($decider, $delay) {
+            return new RetryMiddleware($decider, $handler, $delay);
+        };
+    }
+
+    /**
+     * Middleware that logs requests, responses, and errors using a message
+     * formatter.
+     *
+     * @param LoggerInterface  $logger Logs messages.
+     * @param MessageFormatter $formatter Formatter used to create message strings.
+     * @param string           $logLevel Level at which to log requests.
+     *
+     * @return callable Returns a function that accepts the next handler.
+     */
+    public static function log(LoggerInterface $logger, MessageFormatter $formatter, $logLevel = LogLevel::INFO)
+    {
+        return function (callable $handler) use ($logger, $formatter, $logLevel) {
+            return function ($request, array $options) use ($handler, $logger, $formatter, $logLevel) {
+                return $handler($request, $options)->then(
+                    function ($response) use ($logger, $request, $formatter, $logLevel) {
+                        $message = $formatter->format($request, $response);
+                        $logger->log($logLevel, $message);
+                        return $response;
+                    },
+                    function ($reason) use ($logger, $request, $formatter) {
+                        $response = $reason instanceof RequestException
+                            ? $reason->getResponse()
+                            : null;
+                        $message = $formatter->format($request, $response, $reason);
+                        $logger->notice($message);
+                        return \GuzzleHttp\Promise\rejection_for($reason);
+                    }
+                );
+            };
+        };
+    }
+
+    /**
+     * This middleware adds a default content-type if possible, a default
+     * content-length or transfer-encoding header, and the expect header.
+     *
+     * @return callable
+     */
+    public static function prepareBody()
+    {
+        return function (callable $handler) {
+            return new PrepareBodyMiddleware($handler);
+        };
+    }
+
+    /**
+     * Middleware that applies a map function to the request before passing to
+     * the next handler.
+     *
+     * @param callable $fn Function that accepts a RequestInterface and returns
+     *                     a RequestInterface.
+     * @return callable
+     */
+    public static function mapRequest(callable $fn)
+    {
+        return function (callable $handler) use ($fn) {
+            return function ($request, array $options) use ($handler, $fn) {
+                return $handler($fn($request), $options);
+            };
+        };
+    }
+
+    /**
+     * Middleware that applies a map function to the resolved promise's
+     * response.
+     *
+     * @param callable $fn Function that accepts a ResponseInterface and
+     *                     returns a ResponseInterface.
+     * @return callable
+     */
+    public static function mapResponse(callable $fn)
+    {
+        return function (callable $handler) use ($fn) {
+            return function ($request, array $options) use ($handler, $fn) {
+                return $handler($request, $options)->then($fn);
+            };
+        };
+    }
+}

vendor/guzzlehttp/guzzle/src/Pool.php

+<?php
+namespace GuzzleHttp;
+
+use GuzzleHttp\Promise\PromisorInterface;
+use Psr\Http\Message\RequestInterface;
+use GuzzleHttp\Promise\EachPromise;
+
+/**
+ * Sends and iterator of requests concurrently using a capped pool size.
+ *
+ * The pool will read from an iterator until it is cancelled or until the
+ * iterator is consumed. When a request is yielded, the request is sent after
+ * applying the "request_options" request options (if provided in the ctor).
+ *
+ * When a function is yielded by the iterator, the function is provided the
+ * "request_options" array that should be merged on top of any existing
+ * options, and the function MUST then return a wait-able promise.
+ */
+class Pool implements PromisorInterface
+{
+    /** @var EachPromise */
+    private $each;
+
+    /**
+     * @param ClientInterface $client   Client used to send the requests.
+     * @param array|\Iterator $requests Requests or functions that return
+     *                                  requests to send concurrently.
+     * @param array           $config   Associative array of options
+     *     - concurrency: (int) Maximum number of requests to send concurrently
+     *     - options: Array of request options to apply to each request.
+     *     - fulfilled: (callable) Function to invoke when a request completes.
+     *     - rejected: (callable) Function to invoke when a request is rejected.
+     */
+    public function __construct(
+        ClientInterface $client,
+        $requests,
+        array $config = []
+    ) {
+        // Backwards compatibility.
+        if (isset($config['pool_size'])) {
+            $config['concurrency'] = $config['pool_size'];
+        } elseif (!isset($config['concurrency'])) {
+            $config['concurrency'] = 25;
+        }
+
+        if (isset($config['options'])) {
+            $opts = $config['options'];
+            unset($config['options']);
+        } else {
+            $opts = [];
+        }
+
+        $iterable = \GuzzleHttp\Promise\iter_for($requests);
+        $requests = function () use ($iterable, $client, $opts) {
+            foreach ($iterable as $key => $rfn) {
+                if ($rfn instanceof RequestInterface) {
+                    yield $key => $client->sendAsync($rfn, $opts);
+                } elseif (is_callable($rfn)) {
+                    yield $key => $rfn($opts);
+                } else {
+                    throw new \InvalidArgumentException('Each value yielded by '
+                        . 'the iterator must be a Psr7\Http\Message\RequestInterface '
+                        . 'or a callable that returns a promise that fulfills '
+                        . 'with a Psr7\Message\Http\ResponseInterface object.');
+                }
+            }
+        };
+
+        $this->each = new EachPromise($requests(), $config);
+    }
+
+    public function promise()
+    {
+        return $this->each->promise();
+    }
+
+    /**
+     * Sends multiple requests concurrently and returns an array of responses
+     * and exceptions that uses the same ordering as the provided requests.
+     *
+     * IMPORTANT: This method keeps every request and response in memory, and
+     * as such, is NOT recommended when sending a large number or an
+     * indeterminate number of requests concurrently.
+     *
+     * @param ClientInterface $client   Client used to send the requests
+     * @param array|\Iterator $requests Requests to send concurrently.
+     * @param array           $options  Passes through the options available in
+     *                                  {@see GuzzleHttp\Pool::__construct}
+     *
+     * @return array Returns an array containing the response or an exception
+     *               in the same order that the requests were sent.
+     * @throws \InvalidArgumentException if the event format is incorrect.
+     */
+    public static function batch(
+        ClientInterface $client,
+        $requests,
+        array $options = []
+    ) {
+        $res = [];
+        self::cmpCallback($options, 'fulfilled', $res);
+        self::cmpCallback($options, 'rejected', $res);
+        $pool = new static($client, $requests, $options);
+        $pool->promise()->wait();
+        ksort($res);
+
+        return $res;
+    }
+
+    private static function cmpCallback(array &$options, $name, array &$results)
+    {
+        if (!isset($options[$name])) {
+            $options[$name] = function ($v, $k) use (&$results) {
+                $results[$k] = $v;
+            };
+        } else {
+            $currentFn = $options[$name];
+            $options[$name] = function ($v, $k) use (&$results, $currentFn) {
+                $currentFn($v, $k);
+                $results[$k] = $v;
+            };
+        }
+    }
+}

vendor/guzzlehttp/guzzle/src/PrepareBodyMiddleware.php

+<?php
+namespace GuzzleHttp;
+
+use GuzzleHttp\Promise\PromiseInterface;
+use GuzzleHttp\Psr7;
+use Psr\Http\Message\RequestInterface;
+
+/**
+ * Prepares requests that contain a body, adding the Content-Length,
+ * Content-Type, and Expect headers.
+ */
+class PrepareBodyMiddleware
+{
+    /** @var callable  */
+    private $nextHandler;
+
+    /** @var array */
+    private static $skipMethods = ['GET' => true, 'HEAD' => true];
+
+    /**
+     * @param callable $nextHandler Next handler to invoke.
+     */
+    public function __construct(callable $nextHandler)
+    {
+        $this->nextHandler = $nextHandler;
+    }
+
+    /**
+     * @param RequestInterface $request
+     * @param array            $options
+     *
+     * @return PromiseInterface
+     */
+    public function __invoke(RequestInterface $request, array $options)
+    {
+        $fn = $this->nextHandler;
+
+        // Don't do anything if the request has no body.
+        if (isset(self::$skipMethods[$request->getMethod()])
+            || $request->getBody()->getSize() === 0
+        ) {
+            return $fn($request, $options);
+        }
+
+        $modify = [];
+
+        // Add a default content-type if possible.
+        if (!$request->hasHeader('Content-Type')) {
+            if ($uri = $request->getBody()->getMetadata('uri')) {
+                if ($type = Psr7\mimetype_from_filename($uri)) {
+                    $modify['set_headers']['Content-Type'] = $type;
+                }
+            }
+        }
+
+        // Add a default content-length or transfer-encoding header.
+        if (!isset(self::$skipMethods[$request->getMethod()])
+            && !$request->hasHeader('Content-Length')
+            && !$request->hasHeader('Transfer-Encoding')
+        ) {
+            $size = $request->getBody()->getSize();
+            if ($size !== null) {
+                $modify['set_headers']['Content-Length'] = $size;
+            } else {
+                $modify['set_headers']['Transfer-Encoding'] = 'chunked';
+            }
+        }
+
+        // Add the expect header if needed.
+        $this->addExpectHeader($request, $options, $modify);
+
+        return $fn(Psr7\modify_request($request, $modify), $options);
+    }
+
+    private function addExpectHeader(
+        RequestInterface $request,
+        array $options,
+        array &$modify
+    ) {
+        // Determine if the Expect header should be used
+        if ($request->hasHeader('Expect')) {
+            return;
+        }
+
+        $expect = isset($options['expect']) ? $options['expect'] : null;
+
+        // Return if disabled or if you're not using HTTP/1.1 or HTTP/2.0
+        if ($expect === false || $request->getProtocolVersion() < 1.1) {
+            return;
+        }
+
+        // The expect header is unconditionally enabled
+        if ($expect === true) {
+            $modify['set_headers']['Expect'] = '100-Continue';
+            return;
+        }
+
+        // By default, send the expect header when the payload is > 1mb
+        if ($expect === null) {
+            $expect = 1048576;
+        }
+
+        // Always add if the body cannot be rewound, the size cannot be
+        // determined, or the size is greater than the cutoff threshold
+        $body = $request->getBody();
+        $size = $body->getSize();
+
+        if ($size === null || $size >= (int) $expect || !$body->isSeekable()) {
+            $modify['set_headers']['Expect'] = '100-Continue';
+        }
+    }
+}

vendor/guzzlehttp/guzzle/src/RedirectMiddleware.php

+<?php
+namespace GuzzleHttp;
+
+use GuzzleHttp\Exception\BadResponseException;
+use GuzzleHttp\Exception\TooManyRedirectsException;
+use GuzzleHttp\Promise\PromiseInterface;
+use GuzzleHttp\Psr7;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * Request redirect middleware.
+ *
+ * Apply this middleware like other middleware using
+ * {@see GuzzleHttp\Middleware::redirect()}.
+ */
+class RedirectMiddleware
+{
+    const HISTORY_HEADER = 'X-Guzzle-Redirect-History';
+
+    public static $defaultSettings = [
+        'max'             => 5,
+        'protocols'       => ['http', 'https'],
+        'strict'          => false,
+        'referer'         => false,
+        'track_redirects' => false,
+    ];
+
+    /** @var callable  */
+    private $nextHandler;
+
+    /**
+     * @param callable $nextHandler Next handler to invoke.
+     */
+    public function __construct(callable $nextHandler)
+    {
+        $this->nextHandler = $nextHandler;
+    }
+
+    /**
+     * @param RequestInterface $request
+     * @param array            $options
+     *
+     * @return PromiseInterface
+     */
+    public function __invoke(RequestInterface $request, array $options)
+    {
+        $fn = $this->nextHandler;
+
+        if (empty($options['allow_redirects'])) {
+            return $fn($request, $options);
+        }
+
+        if ($options['allow_redirects'] === true) {
+            $options['allow_redirects'] = self::$defaultSettings;
+        } elseif (!is_array($options['allow_redirects'])) {
+            throw new \InvalidArgumentException('allow_redirects must be true, false, or array');
+        } else {
+            // Merge the default settings with the provided settings
+            $options['allow_redirects'] += self::$defaultSettings;
+        }
+
+        if (empty($options['allow_redirects']['max'])) {
+            return $fn($request, $options);
+        }
+
+        return $fn($request, $options)
+            ->then(function (ResponseInterface $response) use ($request, $options) {
+                return $this->checkRedirect($request, $options, $response);
+            });
+    }
+
+    /**
+     * @param RequestInterface  $request
+     * @param array             $options
+     * @param ResponseInterface|PromiseInterface $response
+     *
+     * @return ResponseInterface|PromiseInterface
+     */
+    public function checkRedirect(
+        RequestInterface $request,
+        array $options,
+        ResponseInterface $response
+    ) {
+        if (substr($response->getStatusCode(), 0, 1) != '3'
+            || !$response->hasHeader('Location')
+        ) {
+            return $response;
+        }
+
+        $this->guardMax($request, $options);
+        $nextRequest = $this->modifyRequest($request, $options, $response);
+
+        if (isset($options['allow_redirects']['on_redirect'])) {
+            call_user_func(
+                $options['allow_redirects']['on_redirect'],
+                $request,
+                $response,
+                $nextRequest->getUri()
+            );
+        }
+
+        /** @var PromiseInterface|ResponseInterface $promise */
+        $promise = $this($nextRequest, $options);
+
+        // Add headers to be able to track history of redirects.
+        if (!empty($options['allow_redirects']['track_redirects'])) {
+            return $this->withTracking(
+                $promise,
+                (string) $nextRequest->getUri()
+            );
+        }
+
+        return $promise;
+    }
+
+    private function withTracking(PromiseInterface $promise, $uri)
+    {
+        return $promise->then(
+            function (ResponseInterface $response) use ($uri) {
+                // Note that we are pushing to the front of the list as this
+                // would be an earlier response than what is currently present
+                // in the history header.
+                $header = $response->getHeader(self::HISTORY_HEADER);
+                array_unshift($header, $uri);
+                return $response->withHeader(self::HISTORY_HEADER, $header);
+            }
+        );
+    }
+
+    private function guardMax(RequestInterface $request, array &$options)
+    {
+        $current = isset($options['__redirect_count'])
+            ? $options['__redirect_count']
+            : 0;
+        $options['__redirect_count'] = $current + 1;
+        $max = $options['allow_redirects']['max'];
+
+        if ($options['__redirect_count'] > $max) {
+            throw new TooManyRedirectsException(
+                "Will not follow more than {$max} redirects",
+                $request
+            );
+        }
+    }
+
+    /**
+     * @param RequestInterface  $request
+     * @param array             $options
+     * @param ResponseInterface $response
+     *
+     * @return RequestInterface
+     */
+    public function modifyRequest(
+        RequestInterface $request,
+        array $options,
+        ResponseInterface $response
+    ) {
+        // Request modifications to apply.
+        $modify = [];
+        $protocols = $options['allow_redirects']['protocols'];
+
+        // Use a GET request if this is an entity enclosing request and we are
+        // not forcing RFC compliance, but rather emulating what all browsers
+        // would do.
+        $statusCode = $response->getStatusCode();
+        if ($statusCode == 303 ||
+            ($statusCode <= 302 && $request->getBody() && !$options['allow_redirects']['strict'])
+        ) {
+            $modify['method'] = 'GET';
+            $modify['body'] = '';
+        }
+
+        $modify['uri'] = $this->redirectUri($request, $response, $protocols);
+        Psr7\rewind_body($request);
+
+        // Add the Referer header if it is told to do so and only
+        // add the header if we are not redirecting from https to http.
+        if ($options['allow_redirects']['referer']
+            && $modify['uri']->getScheme() === $request->getUri()->getScheme()
+        ) {
+            $uri = $request->getUri()->withUserInfo('', '');
+            $modify['set_headers']['Referer'] = (string) $uri;
+        } else {
+            $modify['remove_headers'][] = 'Referer';
+        }
+
+        // Remove Authorization header if host is different.
+        if ($request->getUri()->getHost() !== $modify['uri']->getHost()) {
+            $modify['remove_headers'][] = 'Authorization';
+        }
+
+        return Psr7\modify_request($request, $modify);
+    }
+
+    /**
+     * Set the appropriate URL on the request based on the location header
+     *
+     * @param RequestInterface  $request
+     * @param ResponseInterface $response
+     * @param array             $protocols
+     *
+     * @return UriInterface
+     */
+    private function redirectUri(
+        RequestInterface $request,
+        ResponseInterface $response,
+        array $protocols
+    ) {
+        $location = Psr7\UriResolver::resolve(
+            $request->getUri(),
+            new Psr7\Uri($response->getHeaderLine('Location'))
+        );
+
+        // Ensure that the redirect URI is allowed based on the protocols.
+        if (!in_array($location->getScheme(), $protocols)) {
+            throw new BadResponseException(
+                sprintf(
+                    'Redirect URI, %s, does not use one of the allowed redirect protocols: %s',
+                    $location,
+                    implode(', ', $protocols)
+                ),
+                $request,
+                $response
+            );
+        }
+
+        return $location;
+    }
+}

vendor/guzzlehttp/guzzle/src/RequestOptions.php

+<?php
+namespace GuzzleHttp;
+
+/**
+ * This class contains a list of built-in Guzzle request options.
+ *
+ * More documentation for each option can be found at http://guzzlephp.org/.
+ *
+ * @link http://docs.guzzlephp.org/en/v6/request-options.html
+ */
+final class RequestOptions
+{
+    /**
+     * allow_redirects: (bool|array) Controls redirect behavior. Pass false
+     * to disable redirects, pass true to enable redirects, pass an
+     * associative to provide custom redirect settings. Defaults to "false".
+     * This option only works if your handler has the RedirectMiddleware. When
+     * passing an associative array, you can provide the following key value
+     * pairs:
+     *
+     * - max: (int, default=5) maximum number of allowed redirects.
+     * - strict: (bool, default=false) Set to true to use strict redirects
+     *   meaning redirect POST requests with POST requests vs. doing what most
+     *   browsers do which is redirect POST requests with GET requests
+     * - referer: (bool, default=true) Set to false to disable the Referer
+     *   header.
+     * - protocols: (array, default=['http', 'https']) Allowed redirect
+     *   protocols.
+     * - on_redirect: (callable) PHP callable that is invoked when a redirect
+     *   is encountered. The callable is invoked with the request, the redirect
+     *   response that was received, and the effective URI. Any return value
+     *   from the on_redirect function is ignored.
+     */
+    const ALLOW_REDIRECTS = 'allow_redirects';
+
+    /**
+     * auth: (array) Pass an array of HTTP authentication parameters to use
+     * with the request. The array must contain the username in index [0],
+     * the password in index [1], and you can optionally provide a built-in
+     * authentication type in index [2]. Pass null to disable authentication
+     * for a request.
+     */
+    const AUTH = 'auth';
+
+    /**
+     * body: (resource|string|null|int|float|StreamInterface|callable|\Iterator)
+     * Body to send in the request.
+     */
+    const BODY = 'body';
+
+    /**
+     * cert: (string|array) Set to a string to specify the path to a file
+     * containing a PEM formatted SSL client side certificate. If a password
+     * is required, then set cert to an array containing the path to the PEM
+     * file in the first array element followed by the certificate password
+     * in the second array element.
+     */
+    const CERT = 'cert';
+
+    /**
+     * cookies: (bool|GuzzleHttp\Cookie\CookieJarInterface, default=false)
+     * Specifies whether or not cookies are used in a request or what cookie
+     * jar to use or what cookies to send. This option only works if your
+     * handler has the `cookie` middleware. Valid values are `false` and
+     * an instance of {@see GuzzleHttp\Cookie\CookieJarInterface}.
+     */
+    const COOKIES = 'cookies';
+
+    /**
+     * connect_timeout: (float, default=0) Float describing the number of
+     * seconds to wait while trying to connect to a server. Use 0 to wait
+     * indefinitely (the default behavior).
+     */
+    const CONNECT_TIMEOUT = 'connect_timeout';
+
+    /**
+     * debug: (bool|resource) Set to true or set to a PHP stream returned by
+     * fopen()  enable debug output with the HTTP handler used to send a
+     * request.
+     */
+    const DEBUG = 'debug';
+
+    /**
+     * decode_content: (bool, default=true) Specify whether or not
+     * Content-Encoding responses (gzip, deflate, etc.) are automatically
+     * decoded.
+     */
+    const DECODE_CONTENT = 'decode_content';
+
+    /**
+     * delay: (int) The amount of time to delay before sending in milliseconds.
+     */
+    const DELAY = 'delay';
+
+    /**
+     * expect: (bool|integer) Controls the behavior of the
+     * "Expect: 100-Continue" header.
+     *
+     * Set to `true` to enable the "Expect: 100-Continue" header for all
+     * requests that sends a body. Set to `false` to disable the
+     * "Expect: 100-Continue" header for all requests. Set to a number so that
+     * the size of the payload must be greater than the number in order to send
+     * the Expect header. Setting to a number will send the Expect header for
+     * all requests in which the size of the payload cannot be determined or
+     * where the body is not rewindable.
+     *
+     * By default, Guzzle will add the "Expect: 100-Continue" header when the
+     * size of the body of a request is greater than 1 MB and a request is
+     * using HTTP/1.1.
+     */
+    const EXPECT = 'expect';
+
+    /**
+     * form_params: (array) Associative array of form field names to values
+     * where each value is a string or array of strings. Sets the Content-Type
+     * header to application/x-www-form-urlencoded when no Content-Type header
+     * is already present.
+     */
+    const FORM_PARAMS = 'form_params';
+
+    /**
+     * headers: (array) Associative array of HTTP headers. Each value MUST be
+     * a string or array of strings.
+     */
+    const HEADERS = 'headers';
+
+    /**
+     * http_errors: (bool, default=true) Set to false to disable exceptions
+     * when a non- successful HTTP response is received. By default,
+     * exceptions will be thrown for 4xx and 5xx responses. This option only
+     * works if your handler has the `httpErrors` middleware.
+     */
+    const HTTP_ERRORS = 'http_errors';
+
+    /**
+     * json: (mixed) Adds JSON data to a request. The provided value is JSON
+     * encoded and a Content-Type header of application/json will be added to
+     * the request if no Content-Type header is already present.
+     */
+    const JSON = 'json';
+
+    /**
+     * multipart: (array) Array of associative arrays, each containing a
+     * required "name" key mapping to the form field, name, a required
+     * "contents" key mapping to a StreamInterface|resource|string, an
+     * optional "headers" associative array of custom headers, and an
+     * optional "filename" key mapping to a string to send as the filename in
+     * the part. If no "filename" key is present, then no "filename" attribute
+     * will be added to the part.
+     */
+    const MULTIPART = 'multipart';
+
+    /**
+     * on_headers: (callable) A callable that is invoked when the HTTP headers
+     * of the response have been received but the body has not yet begun to
+     * download.
+     */
+    const ON_HEADERS = 'on_headers';
+
+    /**
+     * on_stats: (callable) allows you to get access to transfer statistics of
+     * a request and access the lower level transfer details of the handler
+     * associated with your client. ``on_stats`` is a callable that is invoked
+     * when a handler has finished sending a request. The callback is invoked
+     * with transfer statistics about the request, the response received, or
+     * the error encountered. Included in the data is the total amount of time
+     * taken to send the request.
+     */
+    const ON_STATS = 'on_stats';
+
+    /**
+     * progress: (callable) Defines a function to invoke when transfer
+     * progress is made. The function accepts the following positional
+     * arguments: the total number of bytes expected to be downloaded, the
+     * number of bytes downloaded so far, the number of bytes expected to be
+     * uploaded, the number of bytes uploaded so far.
+     */
+    const PROGRESS = 'progress';
+
+    /**
+     * proxy: (string|array) Pass a string to specify an HTTP proxy, or an
+     * array to specify different proxies for different protocols (where the
+     * key is the protocol and the value is a proxy string).
+     */
+    const PROXY = 'proxy';
+
+    /**
+     * query: (array|string) Associative array of query string values to add
+     * to the request. This option uses PHP's http_build_query() to create
+     * the string representation. Pass a string value if you need more
+     * control than what this method provides
+     */
+    const QUERY = 'query';
+
+    /**
+     * sink: (resource|string|StreamInterface) Where the data of the
+     * response is written to. Defaults to a PHP temp stream. Providing a
+     * string will write data to a file by the given name.
+     */
+    const SINK = 'sink';
+
+    /**
+     * synchronous: (bool) Set to true to inform HTTP handlers that you intend
+     * on waiting on the response. This can be useful for optimizations. Note
+     * that a promise is still returned if you are using one of the async
+     * client methods.
+     */
+    const SYNCHRONOUS = 'synchronous';
+
+    /**
+     * ssl_key: (array|string) Specify the path to a file containing a private
+     * SSL key in PEM format. If a password is required, then set to an array
+     * containing the path to the SSL key in the first array element followed
+     * by the password required for the certificate in the second element.
+     */
+    const SSL_KEY = 'ssl_key';
+
+    /**
+     * stream: Set to true to attempt to stream a response rather than
+     * download it all up-front.
+     */
+    const STREAM = 'stream';
+
+    /**
+     * verify: (bool|string, default=true) Describes the SSL certificate
+     * verification behavior of a request. Set to true to enable SSL
+     * certificate verification using the system CA bundle when available
+     * (the default). Set to false to disable certificate verification (this
+     * is insecure!). Set to a string to provide the path to a CA bundle on
+     * disk to enable verification using a custom certificate.
+     */
+    const VERIFY = 'verify';
+
+    /**
+     * timeout: (float, default=0) Float describing the timeout of the
+     * request in seconds. Use 0 to wait indefinitely (the default behavior).
+     */
+    const TIMEOUT = 'timeout';
+
+    /**
+     * version: (float) Specifies the HTTP protocol version to attempt to use.
+     */
+    const VERSION = 'version';
+}

vendor/guzzlehttp/guzzle/src/RetryMiddleware.php

+<?php
+namespace GuzzleHttp;
+
+use GuzzleHttp\Promise\PromiseInterface;
+use GuzzleHttp\Promise\RejectedPromise;
+use GuzzleHttp\Psr7;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Middleware that retries requests based on the boolean result of
+ * invoking the provided "decider" function.
+ */
+class RetryMiddleware
+{
+    /** @var callable  */
+    private $nextHandler;
+
+    /** @var callable */
+    private $decider;
+
+    /**
+     * @param callable $decider     Function that accepts the number of retries,
+     *                              a request, [response], and [exception] and
+     *                              returns true if the request is to be
+     *                              retried.
+     * @param callable $nextHandler Next handler to invoke.
+     * @param callable $delay       Function that accepts the number of retries
+     *                              and [response] and returns the number of
+     *                              milliseconds to delay.
+     */
+    public function __construct(
+        callable $decider,
+        callable $nextHandler,
+        callable $delay = null
+    ) {
+        $this->decider = $decider;
+        $this->nextHandler = $nextHandler;
+        $this->delay = $delay ?: __CLASS__ . '::exponentialDelay';
+    }
+
+    /**
+     * Default exponential backoff delay function.
+     *
+     * @param $retries
+     *
+     * @return int
+     */
+    public static function exponentialDelay($retries)
+    {
+        return (int) pow(2, $retries - 1);
+    }
+
+    /**
+     * @param RequestInterface $request
+     * @param array            $options
+     *
+     * @return PromiseInterface
+     */
+    public function __invoke(RequestInterface $request, array $options)
+    {
+        if (!isset($options['retries'])) {
+            $options['retries'] = 0;
+        }
+
+        $fn = $this->nextHandler;
+        return $fn($request, $options)
+            ->then(
+                $this->onFulfilled($request, $options),
+                $this->onRejected($request, $options)
+            );
+    }
+
+    private function onFulfilled(RequestInterface $req, array $options)
+    {
+        return function ($value) use ($req, $options) {
+            if (!call_user_func(
+                $this->decider,
+                $options['retries'],
+                $req,
+                $value,
+                null
+            )) {
+                return $value;
+            }
+            return $this->doRetry($req, $options, $value);
+        };
+    }
+
+    private function onRejected(RequestInterface $req, array $options)
+    {
+        return function ($reason) use ($req, $options) {
+            if (!call_user_func(
+                $this->decider,
+                $options['retries'],
+                $req,
+                null,
+                $reason
+            )) {
+                return new RejectedPromise($reason);
+            }
+            return $this->doRetry($req, $options);
+        };
+    }
+
+    private function doRetry(RequestInterface $request, array $options, ResponseInterface $response = null)
+    {
+        $options['delay'] = call_user_func($this->delay, ++$options['retries'], $response);
+
+        return $this($request, $options);
+    }
+}

vendor/guzzlehttp/guzzle/src/TransferStats.php

+<?php
+namespace GuzzleHttp;
+
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\UriInterface;
+
+/**
+ * Represents data at the point after it was transferred either successfully
+ * or after a network error.
+ */
+final class TransferStats
+{
+    private $request;
+    private $response;
+    private $transferTime;
+    private $handlerStats;
+    private $handlerErrorData;
+
+    /**
+     * @param RequestInterface  $request          Request that was sent.
+     * @param ResponseInterface $response         Response received (if any)
+     * @param null              $transferTime     Total handler transfer time.
+     * @param mixed             $handlerErrorData Handler error data.
+     * @param array             $handlerStats     Handler specific stats.
+     */
+    public function __construct(
+        RequestInterface $request,
+        ResponseInterface $response = null,
+        $transferTime = null,
+        $handlerErrorData = null,
+        $handlerStats = []
+    ) {
+        $this->request = $request;
+        $this->response = $response;
+        $this->transferTime = $transferTime;
+        $this->handlerErrorData = $handlerErrorData;
+        $this->handlerStats = $handlerStats;
+    }
+
+    /**
+     * @return RequestInterface
+     */
+    public function getRequest()
+    {
+        return $this->request;
+    }
+
+    /**
+     * Returns the response that was received (if any).
+     *
+     * @return ResponseInterface|null
+     */
+    public function getResponse()
+    {
+        return $this->response;
+    }
+
+    /**
+     * Returns true if a response was received.
+     *
+     * @return bool
+     */
+    public function hasResponse()
+    {
+        return $this->response !== null;
+    }
+
+    /**
+     * Gets handler specific error data.
+     *
+     * This might be an exception, a integer representing an error code, or
+     * anything else. Relying on this value assumes that you know what handler
+     * you are using.
+     *
+     * @return mixed
+     */
+    public function getHandlerErrorData()
+    {
+        return $this->handlerErrorData;
+    }
+
+    /**
+     * Get the effective URI the request was sent to.
+     *
+     * @return UriInterface
+     */
+    public function getEffectiveUri()
+    {
+        return $this->request->getUri();
+    }
+
+    /**
+     * Get the estimated time the request was being transferred by the handler.
+     *
+     * @return float Time in seconds.
+     */
+    public function getTransferTime()
+    {
+        return $this->transferTime;
+    }
+
+    /**
+     * Gets an array of all of the handler specific transfer data.
+     *
+     * @return array
+     */
+    public function getHandlerStats()
+    {
+        return $this->handlerStats;
+    }
+
+    /**
+     * Get a specific handler statistic from the handler by name.
+     *
+     * @param string $stat Handler specific transfer stat to retrieve.
+     *
+     * @return mixed|null
+     */
+    public function getHandlerStat($stat)
+    {
+        return isset($this->handlerStats[$stat])
+            ? $this->handlerStats[$stat]
+            : null;
+    }
+}

vendor/guzzlehttp/guzzle/src/UriTemplate.php

+<?php
+namespace GuzzleHttp;
+
+/**
+ * Expands URI templates. Userland implementation of PECL uri_template.
+ *
+ * @link http://tools.ietf.org/html/rfc6570
+ */
+class UriTemplate
+{
+    /** @var string URI template */
+    private $template;
+
+    /** @var array Variables to use in the template expansion */
+    private $variables;
+
+    /** @var array Hash for quick operator lookups */
+    private static $operatorHash = [
+        ''  => ['prefix' => '',  'joiner' => ',', 'query' => false],
+        '+' => ['prefix' => '',  'joiner' => ',', 'query' => false],
+        '#' => ['prefix' => '#', 'joiner' => ',', 'query' => false],
+        '.' => ['prefix' => '.', 'joiner' => '.', 'query' => false],
+        '/' => ['prefix' => '/', 'joiner' => '/', 'query' => false],
+        ';' => ['prefix' => ';', 'joiner' => ';', 'query' => true],
+        '?' => ['prefix' => '?', 'joiner' => '&', 'query' => true],
+        '&' => ['prefix' => '&', 'joiner' => '&', 'query' => true]
+    ];
+
+    /** @var array Delimiters */
+    private static $delims = [':', '/', '?', '#', '[', ']', '@', '!', '$',
+        '&', '\'', '(', ')', '*', '+', ',', ';', '='];
+
+    /** @var array Percent encoded delimiters */
+    private static $delimsPct = ['%3A', '%2F', '%3F', '%23', '%5B', '%5D',
+        '%40', '%21', '%24', '%26', '%27', '%28', '%29', '%2A', '%2B', '%2C',
+        '%3B', '%3D'];
+
+    public function expand($template, array $variables)
+    {
+        if (false === strpos($template, '{')) {
+            return $template;
+        }
+
+        $this->template = $template;
+        $this->variables = $variables;
+
+        return preg_replace_callback(
+            '/\{([^\}]+)\}/',
+            [$this, 'expandMatch'],
+            $this->template
+        );
+    }
+
+    /**
+     * Parse an expression into parts
+     *
+     * @param string $expression Expression to parse
+     *
+     * @return array Returns an associative array of parts
+     */
+    private function parseExpression($expression)
+    {
+        $result = [];
+
+        if (isset(self::$operatorHash[$expression[0]])) {
+            $result['operator'] = $expression[0];
+            $expression = substr($expression, 1);
+        } else {
+            $result['operator'] = '';
+        }
+
+        foreach (explode(',', $expression) as $value) {
+            $value = trim($value);
+            $varspec = [];
+            if ($colonPos = strpos($value, ':')) {
+                $varspec['value'] = substr($value, 0, $colonPos);
+                $varspec['modifier'] = ':';
+                $varspec['position'] = (int) substr($value, $colonPos + 1);
+            } elseif (substr($value, -1) === '*') {
+                $varspec['modifier'] = '*';
+                $varspec['value'] = substr($value, 0, -1);
+            } else {
+                $varspec['value'] = (string) $value;
+                $varspec['modifier'] = '';
+            }
+            $result['values'][] = $varspec;
+        }
+
+        return $result;
+    }
+
+    /**
+     * Process an expansion
+     *
+     * @param array $matches Matches met in the preg_replace_callback
+     *
+     * @return string Returns the replacement string
+     */
+    private function expandMatch(array $matches)
+    {
+        static $rfc1738to3986 = ['+' => '%20', '%7e' => '~'];
+
+        $replacements = [];
+        $parsed = self::parseExpression($matches[1]);
+        $prefix = self::$operatorHash[$parsed['operator']]['prefix'];
+        $joiner = self::$operatorHash[$parsed['operator']]['joiner'];
+        $useQuery = self::$operatorHash[$parsed['operator']]['query'];
+
+        foreach ($parsed['values'] as $value) {
+
+            if (!isset($this->variables[$value['value']])) {
+                continue;
+            }
+
+            $variable = $this->variables[$value['value']];
+            $actuallyUseQuery = $useQuery;
+            $expanded = '';
+
+            if (is_array($variable)) {
+
+                $isAssoc = $this->isAssoc($variable);
+                $kvp = [];
+                foreach ($variable as $key => $var) {
+
+                    if ($isAssoc) {
+                        $key = rawurlencode($key);
+                        $isNestedArray = is_array($var);
+                    } else {
+                        $isNestedArray = false;
+                    }
+
+                    if (!$isNestedArray) {
+                        $var = rawurlencode($var);
+                        if ($parsed['operator'] === '+' ||
+                            $parsed['operator'] === '#'
+                        ) {
+                            $var = $this->decodeReserved($var);
+                        }
+                    }
+
+                    if ($value['modifier'] === '*') {
+                        if ($isAssoc) {
+                            if ($isNestedArray) {
+                                // Nested arrays must allow for deeply nested
+                                // structures.
+                                $var = strtr(
+                                    http_build_query([$key => $var]),
+                                    $rfc1738to3986
+                                );
+                            } else {
+                                $var = $key . '=' . $var;
+                            }
+                        } elseif ($key > 0 && $actuallyUseQuery) {
+                            $var = $value['value'] . '=' . $var;
+                        }
+                    }
+
+                    $kvp[$key] = $var;
+                }
+
+                if (empty($variable)) {
+                    $actuallyUseQuery = false;
+                } elseif ($value['modifier'] === '*') {
+                    $expanded = implode($joiner, $kvp);
+                    if ($isAssoc) {
+                        // Don't prepend the value name when using the explode
+                        // modifier with an associative array.
+                        $actuallyUseQuery = false;
+                    }
+                } else {
+                    if ($isAssoc) {
+                        // When an associative array is encountered and the
+                        // explode modifier is not set, then the result must be
+                        // a comma separated list of keys followed by their
+                        // respective values.
+                        foreach ($kvp as $k => &$v) {
+                            $v = $k . ',' . $v;
+                        }
+                    }
+                    $expanded = implode(',', $kvp);
+                }
+
+            } else {
+                if ($value['modifier'] === ':') {
+                    $variable = substr($variable, 0, $value['position']);
+                }
+                $expanded = rawurlencode($variable);
+                if ($parsed['operator'] === '+' || $parsed['operator'] === '#') {
+                    $expanded = $this->decodeReserved($expanded);
+                }
+            }
+
+            if ($actuallyUseQuery) {
+                if (!$expanded && $joiner !== '&') {
+                    $expanded = $value['value'];
+                } else {
+                    $expanded = $value['value'] . '=' . $expanded;
+                }
+            }
+
+            $replacements[] = $expanded;
+        }
+
+        $ret = implode($joiner, $replacements);
+        if ($ret && $prefix) {
+            return $prefix . $ret;
+        }
+
+        return $ret;
+    }
+
+    /**
+     * Determines if an array is associative.
+     *
+     * This makes the assumption that input arrays are sequences or hashes.
+     * This assumption is a tradeoff for accuracy in favor of speed, but it
+     * should work in almost every case where input is supplied for a URI
+     * template.
+     *
+     * @param array $array Array to check
+     *
+     * @return bool
+     */
+    private function isAssoc(array $array)
+    {
+        return $array && array_keys($array)[0] !== 0;
+    }
+
+    /**
+     * Removes percent encoding on reserved characters (used with + and #
+     * modifiers).
+     *
+     * @param string $string String to fix
+     *
+     * @return string
+     */
+    private function decodeReserved($string)
+    {
+        return str_replace(self::$delimsPct, self::$delims, $string);
+    }
+}

vendor/guzzlehttp/guzzle/src/functions.php

+<?php
+namespace GuzzleHttp;
+
+use GuzzleHttp\Handler\CurlHandler;
+use GuzzleHttp\Handler\CurlMultiHandler;
+use GuzzleHttp\Handler\Proxy;
+use GuzzleHttp\Handler\StreamHandler;
+
+/**
+ * Expands a URI template
+ *
+ * @param string $template  URI template
+ * @param array  $variables Template variables
+ *
+ * @return string
+ */
+function uri_template($template, array $variables)
+{
+    if (extension_loaded('uri_template')) {
+        // @codeCoverageIgnoreStart
+        return \uri_template($template, $variables);
+        // @codeCoverageIgnoreEnd
+    }
+
+    static $uriTemplate;
+    if (!$uriTemplate) {
+        $uriTemplate = new UriTemplate();
+    }
+
+    return $uriTemplate->expand($template, $variables);
+}
+
+/**
+ * Debug function used to describe the provided value type and class.
+ *
+ * @param mixed $input
+ *
+ * @return string Returns a string containing the type of the variable and
+ *                if a class is provided, the class name.
+ */
+function describe_type($input)
+{
+    switch (gettype($input)) {
+        case 'object':
+            return 'object(' . get_class($input) . ')';
+        case 'array':
+            return 'array(' . count($input) . ')';
+        default:
+            ob_start();
+            var_dump($input);
+            // normalize float vs double
+            return str_replace('double(', 'float(', rtrim(ob_get_clean()));
+    }
+}
+
+/**
+ * Parses an array of header lines into an associative array of headers.
+ *
+ * @param array $lines Header lines array of strings in the following
+ *                     format: "Name: Value"
+ * @return array
+ */
+function headers_from_lines($lines)
+{
+    $headers = [];
+
+    foreach ($lines as $line) {
+        $parts = explode(':', $line, 2);
+        $headers[trim($parts[0])][] = isset($parts[1])
+            ? trim($parts[1])
+            : null;
+    }
+
+    return $headers;
+}
+
+/**
+ * Returns a debug stream based on the provided variable.
+ *
+ * @param mixed $value Optional value
+ *
+ * @return resource
+ */
+function debug_resource($value = null)
+{
+    if (is_resource($value)) {
+        return $value;
+    } elseif (defined('STDOUT')) {
+        return STDOUT;
+    }
+
+    return fopen('php://output', 'w');
+}
+
+/**
+ * Chooses and creates a default handler to use based on the environment.
+ *
+ * The returned handler is not wrapped by any default middlewares.
+ *
+ * @throws \RuntimeException if no viable Handler is available.
+ * @return callable Returns the best handler for the given system.
+ */
+function choose_handler()
+{
+    $handler = null;
+    if (function_exists('curl_multi_exec') && function_exists('curl_exec')) {
+        $handler = Proxy::wrapSync(new CurlMultiHandler(), new CurlHandler());
+    } elseif (function_exists('curl_exec')) {
+        $handler = new CurlHandler();
+    } elseif (function_exists('curl_multi_exec')) {
+        $handler = new CurlMultiHandler();
+    }
+
+    if (ini_get('allow_url_fopen')) {
+        $handler = $handler
+            ? Proxy::wrapStreaming($handler, new StreamHandler())
+            : new StreamHandler();
+    } elseif (!$handler) {
+        throw new \RuntimeException('GuzzleHttp requires cURL, the '
+            . 'allow_url_fopen ini setting, or a custom HTTP handler.');
+    }
+
+    return $handler;
+}
+
+/**
+ * Get the default User-Agent string to use with Guzzle
+ *
+ * @return string
+ */
+function default_user_agent()
+{
+    static $defaultAgent = '';
+
+    if (!$defaultAgent) {
+        $defaultAgent = 'GuzzleHttp/' . Client::VERSION;
+        if (extension_loaded('curl') && function_exists('curl_version')) {
+            $defaultAgent .= ' curl/' . \curl_version()['version'];
+        }
+        $defaultAgent .= ' PHP/' . PHP_VERSION;
+    }
+
+    return $defaultAgent;
+}
+
+/**
+ * Returns the default cacert bundle for the current system.
+ *
+ * First, the openssl.cafile and curl.cainfo php.ini settings are checked.
+ * If those settings are not configured, then the common locations for
+ * bundles found on Red Hat, CentOS, Fedora, Ubuntu, Debian, FreeBSD, OS X
+ * and Windows are checked. If any of these file locations are found on
+ * disk, they will be utilized.
+ *
+ * Note: the result of this function is cached for subsequent calls.
+ *
+ * @return string
+ * @throws \RuntimeException if no bundle can be found.
+ */
+function default_ca_bundle()
+{
+    static $cached = null;
+    static $cafiles = [
+        // Red Hat, CentOS, Fedora (provided by the ca-certificates package)
+        '/etc/pki/tls/certs/ca-bundle.crt',
+        // Ubuntu, Debian (provided by the ca-certificates package)
+        '/etc/ssl/certs/ca-certificates.crt',
+        // FreeBSD (provided by the ca_root_nss package)
+        '/usr/local/share/certs/ca-root-nss.crt',
+        // OS X provided by homebrew (using the default path)
+        '/usr/local/etc/openssl/cert.pem',
+        // Google app engine
+        '/etc/ca-certificates.crt',
+        // Windows?
+        'C:\\windows\\system32\\curl-ca-bundle.crt',
+        'C:\\windows\\curl-ca-bundle.crt',
+    ];
+
+    if ($cached) {
+        return $cached;
+    }
+
+    if ($ca = ini_get('openssl.cafile')) {
+        return $cached = $ca;
+    }
+
+    if ($ca = ini_get('curl.cainfo')) {
+        return $cached = $ca;
+    }
+
+    foreach ($cafiles as $filename) {
+        if (file_exists($filename)) {
+            return $cached = $filename;
+        }
+    }
+
+    throw new \RuntimeException(<<< EOT
+No system CA bundle could be found in any of the the common system locations.
+PHP versions earlier than 5.6 are not properly configured to use the system's
+CA bundle by default. In order to verify peer certificates, you will need to
+supply the path on disk to a certificate bundle to the 'verify' request
+option: http://docs.guzzlephp.org/en/latest/clients.html#verify. If you do not
+need a specific certificate bundle, then Mozilla provides a commonly used CA
+bundle which can be downloaded here (provided by the maintainer of cURL):
+https://raw.githubusercontent.com/bagder/ca-bundle/master/ca-bundle.crt. Once
+you have a CA bundle available on disk, you can set the 'openssl.cafile' PHP
+ini setting to point to the path to the file, allowing you to omit the 'verify'
+request option. See http://curl.haxx.se/docs/sslcerts.html for more
+information.
+EOT
+    );
+}
+
+/**
+ * Creates an associative array of lowercase header names to the actual
+ * header casing.
+ *
+ * @param array $headers
+ *
+ * @return array
+ */
+function normalize_header_keys(array $headers)
+{
+    $result = [];
+    foreach (array_keys($headers) as $key) {
+        $result[strtolower($key)] = $key;
+    }
+
+    return $result;
+}
+
+/**
+ * Returns true if the provided host matches any of the no proxy areas.
+ *
+ * This method will strip a port from the host if it is present. Each pattern
+ * can be matched with an exact match (e.g., "foo.com" == "foo.com") or a
+ * partial match: (e.g., "foo.com" == "baz.foo.com" and ".foo.com" ==
+ * "baz.foo.com", but ".foo.com" != "foo.com").
+ *
+ * Areas are matched in the following cases:
+ * 1. "*" (without quotes) always matches any hosts.
+ * 2. An exact match.
+ * 3. The area starts with "." and the area is the last part of the host. e.g.
+ *    '.mit.edu' will match any host that ends with '.mit.edu'.
+ *
+ * @param string $host         Host to check against the patterns.
+ * @param array  $noProxyArray An array of host patterns.
+ *
+ * @return bool
+ */
+function is_host_in_noproxy($host, array $noProxyArray)
+{
+    if (strlen($host) === 0) {
+        throw new \InvalidArgumentException('Empty host provided');
+    }
+
+    // Strip port if present.
+    if (strpos($host, ':')) {
+        $host = explode($host, ':', 2)[0];
+    }
+
+    foreach ($noProxyArray as $area) {
+        // Always match on wildcards.
+        if ($area === '*') {
+            return true;
+        } elseif (empty($area)) {
+            // Don't match on empty values.
+            continue;
+        } elseif ($area === $host) {
+            // Exact matches.
+            return true;
+        } else {
+            // Special match if the area when prefixed with ".". Remove any
+            // existing leading "." and add a new leading ".".
+            $area = '.' . ltrim($area, '.');
+            if (substr($host, -(strlen($area))) === $area) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+/**
+ * Wrapper for json_decode that throws when an error occurs.
+ *
+ * @param string $json    JSON data to parse
+ * @param bool $assoc     When true, returned objects will be converted
+ *                        into associative arrays.
+ * @param int    $depth   User specified recursion depth.
+ * @param int    $options Bitmask of JSON decode options.
+ *
+ * @return mixed
+ * @throws \InvalidArgumentException if the JSON cannot be decoded.
+ * @link http://www.php.net/manual/en/function.json-decode.php
+ */
+function json_decode($json, $assoc = false, $depth = 512, $options = 0)
+{
+    $data = \json_decode($json, $assoc, $depth, $options);
+    if (JSON_ERROR_NONE !== json_last_error()) {
+        throw new \InvalidArgumentException(
+            'json_decode error: ' . json_last_error_msg());
+    }
+
+    return $data;
+}
+
+/**
+ * Wrapper for JSON encoding that throws when an error occurs.
+ *
+ * @param mixed $value   The value being encoded
+ * @param int    $options JSON encode option bitmask
+ * @param int    $depth   Set the maximum depth. Must be greater than zero.
+ *
+ * @return string
+ * @throws \InvalidArgumentException if the JSON cannot be encoded.
+ * @link http://www.php.net/manual/en/function.json-encode.php
+ */
+function json_encode($value, $options = 0, $depth = 512)
+{
+    $json = \json_encode($value, $options, $depth);
+    if (JSON_ERROR_NONE !== json_last_error()) {
+        throw new \InvalidArgumentException(
+            'json_encode error: ' . json_last_error_msg());
+    }
+
+    return $json;
+}