Upgrading guzzlehttp/guzzle 2 to 3

Sending PHP stream requests no longer forces HTTP/1.0.

No longer guessing Content-Type based on the path of a request.

Bug fix: Cookies no longer match on IP addresses per RFC 6265.

Removed Guzzle\Http\ClientInterface::setDefaultHeaders().

Removed Guzzle\Http\ClientInterface::getDefaultHeaders().

Removed Guzzle\Http\ClientInterface::expandTemplate().

Removed Guzzle\Http\ClientInterface::setRequestFactory().

Removed Guzzle\Http\ClientInterface::getCurlMulti().

Removed Guzzle\Http\Message\RequestInterface::canCache.

Removed Guzzle\Http\Message\RequestInterface::setIsRedirect.

Removed Guzzle\Http\Message\RequestInterface::isRedirect.

CacheKeyProviderInterface and DefaultCacheKeyProvider are no longer used.

Removed the whole changedHeader function system of messages because all header changes now go through addHeader.

Removed from interface: Guzzle\Http\ClientInterface::setUriTemplate.

Removed from interface: Guzzle\Http\ClientInterface::setCurlMulti.

Removed Guzzle\Http\Message\Request::receivedRequestHeader and implemented this functionality in Guzzle\Http\Curl\RequestMediator.

Removed the optional $asString parameter from MessageInterface::getHeader.

Removed the optional $tryChunkedTransfer option from Guzzle\Http\Message\EntityEnclosingRequestInterface.

Removed the $asObjects argument from Guzzle\Http\Message\MessageInterface::getHeaders.

Removed Guzzle\Parser\ParserRegister::get.

Removed Guzzle\Parser\ParserRegister::set.

Removed cURL blacklist support.

Removed the injecting of a request object onto a response object.

Bug fix: AsyncPlugin no longer forces HEAD requests.

Cleaned up how manual responses are queued on requests (removed "queued_response" and now using request.before_send).

Bug fix: empty parameters are removed from an OAuth signature.

Bug fix: Removed code that attempted to determine the size of a stream when data is written to the stream.

Bug fix: Removed the adding of default empty arrays and false Booleans to responses in order to be consistent across response location visitors.

Bug fix: Removed the possibility of creating configuration files with circular dependencies.

BC: Removed Guzzle\Http\Utils class.

BC: Setting a service description on a client will no longer modify the client's command factories.

BC: Guzzle\Stream\Stream::getWrapper() and Guzzle\Stream\Stream::getSteamType() are no longer converted to lowercase.

CurlMulti is no longer reused globally.

URLs with no path no longer contain a "/" by default.

Guzzle\Http\QueryString does no longer manages the leading "?".

BadResponseException no longer includes the full request and response message.

Guzzle\Http\QueryString now uses Guzzle\Http\QueryAggregator\QueryAggregatorInterface objects to add custom value aggregation and no longer uses callbacks.

Service clients no longer require a base_url option in the factory.

Models no longer require a Parameter structure or initial data in the constructor.

Removed support for XML configs and descriptions.

Removed the Validation component and Inspector.

No longer sending Accept and Accept-Encoding headers on every request.

Marked Guzzle\Service\Client::enableMagicMethods() as deprecated.

Deprecating ZF1 cache and log adapters.

You can now enable E_USER_DEPRECATED warnings to see if you are using a deprecated method by setting Guzzle\Common\Version::$emitWarnings to true.

Marked Guzzle\Http\Message\Request::isResponseBodyRepeatable() as deprecated.

Marked Guzzle\Http\Message\Request::canCache() as deprecated.

Marked Guzzle\Http\Message\Request::setIsRedirect() as deprecated.

Marked Guzzle\Http\Message\Request::isRedirect() as deprecated.

Marked Guzzle\Cache\CacheAdapterFactory::factory() as deprecated.

Marked 'command.headers', 'command.response_body' and 'command.on_complete' as deprecated for AbstractCommand.

Marked 'request.params' for Guzzle\Http\Client as deprecated.

Marked Guzzle\Service\Client::getDefaultHeaders() as deprecated.

Marked Guzzle\Service\Client::setDefaultHeaders() as deprecated.

Marked Guzzle\Parser\Url\UrlParser as deprecated.

Marked Guzzle\Common\Collection::inject() as deprecated.

Marked Guzzle\Plugin\CurlAuth\CurlAuthPlugin as deprecated.

Deprecated cache control specific methods on Guzzle\Http\Message\AbstractMessage.

Deprecating Response::getRequest and now using a shallow clone of a request object to remove a circular reference to help with refcount based garbage collection of resources created by sending a…

Deprecating Response::getPreviousResponse() (method signature still exists, but it's deprecated).

CURLOPT_SSL_VERIFYHOST is never set to 1 because it is deprecated.