1# Change Log
3## 6.5.5 - 2020-06-16
5* Unpin version constraint for `symfony/polyfill-intl-idn` [#2678](https://github.com/guzzle/guzzle/pull/2678)
7## 6.5.4 - 2020-05-25
9* Fix various intl icu issues [#2626](https://github.com/guzzle/guzzle/pull/2626)
11## 6.5.3 - 2020-04-18
13* Use Symfony intl-idn polyfill [#2550](https://github.com/guzzle/guzzle/pull/2550)
14* Remove use of internal functions [#2548](https://github.com/guzzle/guzzle/pull/2548)
16## 6.5.2 - 2019-12-23
18* idn_to_ascii() fix for old PHP versions [#2489](https://github.com/guzzle/guzzle/pull/2489)
20## 6.5.1 - 2019-12-21
22* Better defaults for PHP installations with old ICU lib [#2454](https://github.com/guzzle/guzzle/pull/2454)
23* IDN support for redirects [#2424](https://github.com/guzzle/guzzle/pull/2424)
25## 6.5.0 - 2019-12-07
27* Improvement: Added support for reset internal queue in MockHandler. [#2143](https://github.com/guzzle/guzzle/pull/2143)
28* Improvement: Added support to pass arbitrary options to `curl_multi_init`. [#2287](https://github.com/guzzle/guzzle/pull/2287)
29* Fix: Gracefully handle passing `null` to the `header` option. [#2132](https://github.com/guzzle/guzzle/pull/2132)
30* Fix: `RetryMiddleware` did not do exponential delay between retries due unit mismatch. [#2132](https://github.com/guzzle/guzzle/pull/2132)
31  Previously, `RetryMiddleware` would sleep for 1 millisecond, then 2 milliseconds, then 4 milliseconds.
32  **After this change, `RetryMiddleware` will sleep for 1 second, then 2 seconds, then 4 seconds.**
33  `Middleware::retry()` accepts a second callback parameter to override the default timeouts if needed.
34* Fix: Prevent undefined offset when using array for ssl_key options. [#2348](https://github.com/guzzle/guzzle/pull/2348)
35* Deprecated `ClientInterface::VERSION`
37## 6.4.1 - 2019-10-23
39* No `guzzle.phar` was created in 6.4.0 due expired API token. This release will fix that
40* Added `parent::__construct()` to `FileCookieJar` and `SessionCookieJar`
42## 6.4.0 - 2019-10-23
44* Improvement: Improved error messages when using curl < 7.21.2 [#2108](https://github.com/guzzle/guzzle/pull/2108)
45* Fix: Test if response is readable before returning a summary in `RequestException::getResponseBodySummary()` [#2081](https://github.com/guzzle/guzzle/pull/2081)
46* Fix: Add support for GUZZLE_CURL_SELECT_TIMEOUT environment variable [#2161](https://github.com/guzzle/guzzle/pull/2161)
47* Improvement: Added `GuzzleHttp\Exception\InvalidArgumentException` [#2163](https://github.com/guzzle/guzzle/pull/2163)
48* Improvement: Added `GuzzleHttp\_current_time()` to use `hrtime()` if that function exists. [#2242](https://github.com/guzzle/guzzle/pull/2242)
49* Improvement: Added curl's `appconnect_time` in `TransferStats` [#2284](https://github.com/guzzle/guzzle/pull/2284)
50* Improvement: Make GuzzleException extend Throwable wherever it's available [#2273](https://github.com/guzzle/guzzle/pull/2273)
51* Fix: Prevent concurrent writes to file when saving `CookieJar` [#2335](https://github.com/guzzle/guzzle/pull/2335)
52* Improvement: Update `MockHandler` so we can test transfer time [#2362](https://github.com/guzzle/guzzle/pull/2362)
54## 6.3.3 - 2018-04-22
56* Fix: Default headers when decode_content is specified
59## 6.3.2 - 2018-03-26
61* Fix: Release process
64## 6.3.1 - 2018-03-26
66* Bug fix: Parsing 0 epoch expiry times in cookies [#2014](https://github.com/guzzle/guzzle/pull/2014)
67* Improvement: Better ConnectException detection [#2012](https://github.com/guzzle/guzzle/pull/2012)
68* Bug fix: Malformed domain that contains a "/" [#1999](https://github.com/guzzle/guzzle/pull/1999)
69* Bug fix: Undefined offset when a cookie has no first key-value pair [#1998](https://github.com/guzzle/guzzle/pull/1998)
70* Improvement: Support PHPUnit 6 [#1953](https://github.com/guzzle/guzzle/pull/1953)
71* Bug fix: Support empty headers [#1915](https://github.com/guzzle/guzzle/pull/1915)
72* Bug fix: Ignore case during header modifications [#1916](https://github.com/guzzle/guzzle/pull/1916)
74+ Minor code cleanups, documentation fixes and clarifications.
77## 6.3.0 - 2017-06-22
79* Feature: force IP resolution (ipv4 or ipv6) [#1608](https://github.com/guzzle/guzzle/pull/1608), [#1659](https://github.com/guzzle/guzzle/pull/1659)
80* Improvement: Don't include summary in exception message when body is empty [#1621](https://github.com/guzzle/guzzle/pull/1621)
81* Improvement: Handle `on_headers` option in MockHandler [#1580](https://github.com/guzzle/guzzle/pull/1580)
82* Improvement: Added SUSE Linux CA path [#1609](https://github.com/guzzle/guzzle/issues/1609)
83* Improvement: Use class reference for getting the name of the class instead of using hardcoded strings [#1641](https://github.com/guzzle/guzzle/pull/1641)
84* Feature: Added `read_timeout` option [#1611](https://github.com/guzzle/guzzle/pull/1611)
85* Bug fix: PHP 7.x fixes [#1685](https://github.com/guzzle/guzzle/pull/1685), [#1686](https://github.com/guzzle/guzzle/pull/1686), [#1811](https://github.com/guzzle/guzzle/pull/1811)
86* Deprecation: BadResponseException instantiation without a response [#1642](https://github.com/guzzle/guzzle/pull/1642)
87* Feature: Added NTLM auth [#1569](https://github.com/guzzle/guzzle/pull/1569)
88* Feature: Track redirect HTTP status codes [#1711](https://github.com/guzzle/guzzle/pull/1711)
89* Improvement: Check handler type during construction [#1745](https://github.com/guzzle/guzzle/pull/1745)
90* Improvement: Always include the Content-Length if there's a body [#1721](https://github.com/guzzle/guzzle/pull/1721)
91* Feature: Added convenience method to access a cookie by name [#1318](https://github.com/guzzle/guzzle/pull/1318)
92* Bug fix: Fill `CURLOPT_CAPATH` and `CURLOPT_CAINFO` properly [#1684](https://github.com/guzzle/guzzle/pull/1684)
93* Improvement:  	Use `\GuzzleHttp\Promise\rejection_for` function instead of object init [#1827](https://github.com/guzzle/guzzle/pull/1827)
96+ Minor code cleanups, documentation fixes and clarifications.
98## 6.2.3 - 2017-02-28
100* Fix deprecations with guzzle/psr7 version 1.4
102## 6.2.2 - 2016-10-08
104* Allow to pass nullable Response to delay callable
105* Only add scheme when host is present
106* Fix drain case where content-length is the literal string zero
107* Obfuscate in-URL credentials in exceptions
109## 6.2.1 - 2016-07-18
111* Address HTTP_PROXY security vulnerability, CVE-2016-5385:
112  https://httpoxy.org/
113* Fixing timeout bug with StreamHandler:
114  https://github.com/guzzle/guzzle/pull/1488
115* Only read up to `Content-Length` in PHP StreamHandler to avoid timeouts when
116  a server does not honor `Connection: close`.
117* Ignore URI fragment when sending requests.
119## 6.2.0 - 2016-03-21
121* Feature: added `GuzzleHttp\json_encode` and `GuzzleHttp\json_decode`.
122  https://github.com/guzzle/guzzle/pull/1389
123* Bug fix: Fix sleep calculation when waiting for delayed requests.
124  https://github.com/guzzle/guzzle/pull/1324
125* Feature: More flexible history containers.
126  https://github.com/guzzle/guzzle/pull/1373
127* Bug fix: defer sink stream opening in StreamHandler.
128  https://github.com/guzzle/guzzle/pull/1377
129* Bug fix: do not attempt to escape cookie values.
130  https://github.com/guzzle/guzzle/pull/1406
131* Feature: report original content encoding and length on decoded responses.
132  https://github.com/guzzle/guzzle/pull/1409
133* Bug fix: rewind seekable request bodies before dispatching to cURL.
134  https://github.com/guzzle/guzzle/pull/1422
135* Bug fix: provide an empty string to `http_build_query` for HHVM workaround.
136  https://github.com/guzzle/guzzle/pull/1367
138## 6.1.1 - 2015-11-22
140* Bug fix: Proxy::wrapSync() now correctly proxies to the appropriate handler
141  https://github.com/guzzle/guzzle/commit/911bcbc8b434adce64e223a6d1d14e9a8f63e4e4
142* Feature: HandlerStack is now more generic.
143  https://github.com/guzzle/guzzle/commit/f2102941331cda544745eedd97fc8fd46e1ee33e
144* Bug fix: setting verify to false in the StreamHandler now disables peer
145  verification. https://github.com/guzzle/guzzle/issues/1256
146* Feature: Middleware now uses an exception factory, including more error
147  context. https://github.com/guzzle/guzzle/pull/1282
148* Feature: better support for disabled functions.
149  https://github.com/guzzle/guzzle/pull/1287
150* Bug fix: fixed regression where MockHandler was not using `sink`.
151  https://github.com/guzzle/guzzle/pull/1292
153## 6.1.0 - 2015-09-08
155* Feature: Added the `on_stats` request option to provide access to transfer
156  statistics for requests. https://github.com/guzzle/guzzle/pull/1202
157* Feature: Added the ability to persist session cookies in CookieJars.
158  https://github.com/guzzle/guzzle/pull/1195
159* Feature: Some compatibility updates for Google APP Engine
160  https://github.com/guzzle/guzzle/pull/1216
161* Feature: Added support for NO_PROXY to prevent the use of a proxy based on
162  a simple set of rules. https://github.com/guzzle/guzzle/pull/1197
163* Feature: Cookies can now contain square brackets.
164  https://github.com/guzzle/guzzle/pull/1237
165* Bug fix: Now correctly parsing `=` inside of quotes in Cookies.
166  https://github.com/guzzle/guzzle/pull/1232
167* Bug fix: Cusotm cURL options now correctly override curl options of the
168  same name. https://github.com/guzzle/guzzle/pull/1221
169* Bug fix: Content-Type header is now added when using an explicitly provided
170  multipart body. https://github.com/guzzle/guzzle/pull/1218
171* Bug fix: Now ignoring Set-Cookie headers that have no name.
172* Bug fix: Reason phrase is no longer cast to an int in some cases in the
173  cURL handler. https://github.com/guzzle/guzzle/pull/1187
174* Bug fix: Remove the Authorization header when redirecting if the Host
175  header changes. https://github.com/guzzle/guzzle/pull/1207
176* Bug fix: Cookie path matching fixes
177  https://github.com/guzzle/guzzle/issues/1129
178* Bug fix: Fixing the cURL `body_as_string` setting
179  https://github.com/guzzle/guzzle/pull/1201
180* Bug fix: quotes are no longer stripped when parsing cookies.
181  https://github.com/guzzle/guzzle/issues/1172
182* Bug fix: `form_params` and `query` now always uses the `&` separator.
183  https://github.com/guzzle/guzzle/pull/1163
184* Bug fix: Adding a Content-Length to PHP stream wrapper requests if not set.
185  https://github.com/guzzle/guzzle/pull/1189
187## 6.0.2 - 2015-07-04
189* Fixed a memory leak in the curl handlers in which references to callbacks
190  were not being removed by `curl_reset`.
191* Cookies are now extracted properly before redirects.
192* Cookies now allow more character ranges.
193* Decoded Content-Encoding responses are now modified to correctly reflect
194  their state if the encoding was automatically removed by a handler. This
195  means that the `Content-Encoding` header may be removed an the
196  `Content-Length` modified to reflect the message size after removing the
197  encoding.
198* Added a more explicit error message when trying to use `form_params` and
199  `multipart` in the same request.
200* Several fixes for HHVM support.
201* Functions are now conditionally required using an additional level of
202  indirection to help with global Composer installations.
204## 6.0.1 - 2015-05-27
206* Fixed a bug with serializing the `query` request option where the `&`
207  separator was missing.
208* Added a better error message for when `body` is provided as an array. Please
209  use `form_params` or `multipart` instead.
210* Various doc fixes.
212## 6.0.0 - 2015-05-26
214* See the UPGRADING.md document for more information.
215* Added `multipart` and `form_params` request options.
216* Added `synchronous` request option.
217* Added the `on_headers` request option.
218* Fixed `expect` handling.
219* No longer adding default middlewares in the client ctor. These need to be
220  present on the provided handler in order to work.
221* Requests are no longer initiated when sending async requests with the
222  CurlMultiHandler. This prevents unexpected recursion from requests completing
223  while ticking the cURL loop.
224* Removed the semantics of setting `default` to `true`. This is no longer
225  required now that the cURL loop is not ticked for async requests.
226* Added request and response logging middleware.
227* No longer allowing self signed certificates when using the StreamHandler.
228* Ensuring that `sink` is valid if saving to a file.
229* Request exceptions now include a "handler context" which provides handler
230  specific contextual information.
231* Added `GuzzleHttp\RequestOptions` to allow request options to be applied
232  using constants.
233* `$maxHandles` has been removed from CurlMultiHandler.
234* `MultipartPostBody` is now part of the `guzzlehttp/psr7` package.
236## 5.3.0 - 2015-05-19
238* Mock now supports `save_to`
239* Marked `AbstractRequestEvent::getTransaction()` as public.
240* Fixed a bug in which multiple headers using different casing would overwrite
241  previous headers in the associative array.
242* Added `Utils::getDefaultHandler()`
243* Marked `GuzzleHttp\Client::getDefaultUserAgent` as deprecated.
244* URL scheme is now always lowercased.
246## 6.0.0-beta.1
248* Requires PHP >= 5.5
249* Updated to use PSR-7
250  * Requires immutable messages, which basically means an event based system
251    owned by a request instance is no longer possible.
252  * Utilizing the [Guzzle PSR-7 package](https://github.com/guzzle/psr7).
253  * Removed the dependency on `guzzlehttp/streams`. These stream abstractions
254    are available in the `guzzlehttp/psr7` package under the `GuzzleHttp\Psr7`
255    namespace.
256* Added middleware and handler system
257  * Replaced the Guzzle event and subscriber system with a middleware system.
258  * No longer depends on RingPHP, but rather places the HTTP handlers directly
259    in Guzzle, operating on PSR-7 messages.
260  * Retry logic is now encapsulated in `GuzzleHttp\Middleware::retry`, which
261    means the `guzzlehttp/retry-subscriber` is now obsolete.
262  * Mocking responses is now handled using `GuzzleHttp\Handler\MockHandler`.
263* Asynchronous responses
264  * No longer supports the `future` request option to send an async request.
265    Instead, use one of the `*Async` methods of a client (e.g., `requestAsync`,
266    `getAsync`, etc.).
267  * Utilizing `GuzzleHttp\Promise` instead of React's promise library to avoid
268    recursion required by chaining and forwarding react promises. See
269    https://github.com/guzzle/promises
270  * Added `requestAsync` and `sendAsync` to send request asynchronously.
271  * Added magic methods for `getAsync()`, `postAsync()`, etc. to send requests
272    asynchronously.
273* Request options
274  * POST and form updates
275    * Added the `form_fields` and `form_files` request options.
276    * Removed the `GuzzleHttp\Post` namespace.
277    * The `body` request option no longer accepts an array for POST requests.
278  * The `exceptions` request option has been deprecated in favor of the
279    `http_errors` request options.
280  * The `save_to` request option has been deprecated in favor of `sink` request
281    option.
282* Clients no longer accept an array of URI template string and variables for
283  URI variables. You will need to expand URI templates before passing them
284  into a client constructor or request method.
285* Client methods `get()`, `post()`, `put()`, `patch()`, `options()`, etc. are
286  now magic methods that will send synchronous requests.
287* Replaced `Utils.php` with plain functions in `functions.php`.
288* Removed `GuzzleHttp\Collection`.
289* Removed `GuzzleHttp\BatchResults`. Batched pool results are now returned as
290  an array.
291* Removed `GuzzleHttp\Query`. Query string handling is now handled using an
292  associative array passed into the `query` request option. The query string
293  is serialized using PHP's `http_build_query`. If you need more control, you
294  can pass the query string in as a string.
295* `GuzzleHttp\QueryParser` has been replaced with the
296  `GuzzleHttp\Psr7\parse_query`.
298## 5.2.0 - 2015-01-27
300* Added `AppliesHeadersInterface` to make applying headers to a request based
301  on the body more generic and not specific to `PostBodyInterface`.
302* Reduced the number of stack frames needed to send requests.
303* Nested futures are now resolved in the client rather than the RequestFsm
304* Finishing state transitions is now handled in the RequestFsm rather than the
305  RingBridge.
306* Added a guard in the Pool class to not use recursion for request retries.
308## 5.1.0 - 2014-12-19
310* Pool class no longer uses recursion when a request is intercepted.
311* The size of a Pool can now be dynamically adjusted using a callback.
312  See https://github.com/guzzle/guzzle/pull/943.
313* Setting a request option to `null` when creating a request with a client will
314  ensure that the option is not set. This allows you to overwrite default
315  request options on a per-request basis.
316  See https://github.com/guzzle/guzzle/pull/937.
317* Added the ability to limit which protocols are allowed for redirects by
318  specifying a `protocols` array in the `allow_redirects` request option.
319* Nested futures due to retries are now resolved when waiting for synchronous
320  responses. See https://github.com/guzzle/guzzle/pull/947.
321* `"0"` is now an allowed URI path. See
322  https://github.com/guzzle/guzzle/pull/935.
323* `Query` no longer typehints on the `$query` argument in the constructor,
324  allowing for strings and arrays.
325* Exceptions thrown in the `end` event are now correctly wrapped with Guzzle
326  specific exceptions if necessary.
328## 5.0.3 - 2014-11-03
330This change updates query strings so that they are treated as un-encoded values
331by default where the value represents an un-encoded value to send over the
332wire. A Query object then encodes the value before sending over the wire. This
333means that even value query string values (e.g., ":") are url encoded. This
334makes the Query class match PHP's http_build_query function. However, if you
335want to send requests over the wire using valid query string characters that do
336not need to be encoded, then you can provide a string to Url::setQuery() and
337pass true as the second argument to specify that the query string is a raw
338string that should not be parsed or encoded (unless a call to getQuery() is
339subsequently made, forcing the query-string to be converted into a Query
342## 5.0.2 - 2014-10-30
344* Added a trailing `\r\n` to multipart/form-data payloads. See
345  https://github.com/guzzle/guzzle/pull/871
346* Added a `GuzzleHttp\Pool::send()` convenience method to match the docs.
347* Status codes are now returned as integers. See
348  https://github.com/guzzle/guzzle/issues/881
349* No longer overwriting an existing `application/x-www-form-urlencoded` header
350  when sending POST requests, allowing for customized headers. See
351  https://github.com/guzzle/guzzle/issues/877
352* Improved path URL serialization.
354  * No longer double percent-encoding characters in the path or query string if
355    they are already encoded.
356  * Now properly encoding the supplied path to a URL object, instead of only
357    encoding ' ' and '?'.
358  * Note: This has been changed in 5.0.3 to now encode query string values by
359    default unless the `rawString` argument is provided when setting the query
360    string on a URL: Now allowing many more characters to be present in the
361    query string without being percent encoded. See http://tools.ietf.org/html/rfc3986#appendix-A
363## 5.0.1 - 2014-10-16
365Bugfix release.
367* Fixed an issue where connection errors still returned response object in
368  error and end events event though the response is unusable. This has been
369  corrected so that a response is not returned in the `getResponse` method of
370  these events if the response did not complete. https://github.com/guzzle/guzzle/issues/867
371* Fixed an issue where transfer statistics were not being populated in the
372  RingBridge. https://github.com/guzzle/guzzle/issues/866
374## 5.0.0 - 2014-10-12
376Adding support for non-blocking responses and some minor API cleanup.
378### New Features
380* Added support for non-blocking responses based on `guzzlehttp/guzzle-ring`.
381* Added a public API for creating a default HTTP adapter.
382* Updated the redirect plugin to be non-blocking so that redirects are sent
383  concurrently. Other plugins like this can now be updated to be non-blocking.
384* Added a "progress" event so that you can get upload and download progress
385  events.
386* Added `GuzzleHttp\Pool` which implements FutureInterface and transfers
387  requests concurrently using a capped pool size as efficiently as possible.
388* Added `hasListeners()` to EmitterInterface.
389* Removed `GuzzleHttp\ClientInterface::sendAll` and marked
390  `GuzzleHttp\Client::sendAll` as deprecated (it's still there, just not the
391  recommended way).
393### Breaking changes
395The breaking changes in this release are relatively minor. The biggest thing to
396look out for is that request and response objects no longer implement fluent
399* Removed the fluent interfaces (i.e., `return $this`) from requests,
400  responses, `GuzzleHttp\Collection`, `GuzzleHttp\Url`,
401  `GuzzleHttp\Query`, `GuzzleHttp\Post\PostBody`, and
402  `GuzzleHttp\Cookie\SetCookie`. This blog post provides a good outline of
403  why I did this: http://ocramius.github.io/blog/fluent-interfaces-are-evil/.
404  This also makes the Guzzle message interfaces compatible with the current
405  PSR-7 message proposal.
406* Removed "functions.php", so that Guzzle is truly PSR-4 compliant. Except
407  for the HTTP request functions from function.php, these functions are now
408  implemented in `GuzzleHttp\Utils` using camelCase. `GuzzleHttp\json_decode`
409  moved to `GuzzleHttp\Utils::jsonDecode`. `GuzzleHttp\get_path` moved to
410  `GuzzleHttp\Utils::getPath`. `GuzzleHttp\set_path` moved to
411  `GuzzleHttp\Utils::setPath`. `GuzzleHttp\batch` should now be
412  `GuzzleHttp\Pool::batch`, which returns an `objectStorage`. Using functions.php
413  caused problems for many users: they aren't PSR-4 compliant, require an
414  explicit include, and needed an if-guard to ensure that the functions are not
415  declared multiple times.
416* Rewrote adapter layer.
417    * Removing all classes from `GuzzleHttp\Adapter`, these are now
418      implemented as callables that are stored in `GuzzleHttp\Ring\Client`.
419    * Removed the concept of "parallel adapters". Sending requests serially or
420      concurrently is now handled using a single adapter.
421    * Moved `GuzzleHttp\Adapter\Transaction` to `GuzzleHttp\Transaction`. The
422      Transaction object now exposes the request, response, and client as public
423      properties. The getters and setters have been removed.
424* Removed the "headers" event. This event was only useful for changing the
425  body a response once the headers of the response were known. You can implement
426  a similar behavior in a number of ways. One example might be to use a
427  FnStream that has access to the transaction being sent. For example, when the
428  first byte is written, you could check if the response headers match your
429  expectations, and if so, change the actual stream body that is being
430  written to.
431* Removed the `asArray` parameter from
432  `GuzzleHttp\Message\MessageInterface::getHeader`. If you want to get a header
433  value as an array, then use the newly added `getHeaderAsArray()` method of
434  `MessageInterface`. This change makes the Guzzle interfaces compatible with
435  the PSR-7 interfaces.
436* `GuzzleHttp\Message\MessageFactory` no longer allows subclasses to add
437  custom request options using double-dispatch (this was an implementation
438  detail). Instead, you should now provide an associative array to the
439  constructor which is a mapping of the request option name mapping to a
440  function that applies the option value to a request.
441* Removed the concept of "throwImmediately" from exceptions and error events.
442  This control mechanism was used to stop a transfer of concurrent requests
443  from completing. This can now be handled by throwing the exception or by
444  cancelling a pool of requests or each outstanding future request individually.
445* Updated to "GuzzleHttp\Streams" 3.0.
446    * `GuzzleHttp\Stream\StreamInterface::getContents()` no longer accepts a
447      `maxLen` parameter. This update makes the Guzzle streams project
448      compatible with the current PSR-7 proposal.
449    * `GuzzleHttp\Stream\Stream::__construct`,
450      `GuzzleHttp\Stream\Stream::factory`, and
451      `GuzzleHttp\Stream\Utils::create` no longer accept a size in the second
452      argument. They now accept an associative array of options, including the
453      "size" key and "metadata" key which can be used to provide custom metadata.
455## 4.2.2 - 2014-09-08
457* Fixed a memory leak in the CurlAdapter when reusing cURL handles.
458* No longer using `request_fulluri` in stream adapter proxies.
459* Relative redirects are now based on the last response, not the first response.
461## 4.2.1 - 2014-08-19
463* Ensuring that the StreamAdapter does not always add a Content-Type header
464* Adding automated github releases with a phar and zip
466## 4.2.0 - 2014-08-17
468* Now merging in default options using a case-insensitive comparison.
469  Closes https://github.com/guzzle/guzzle/issues/767
470* Added the ability to automatically decode `Content-Encoding` response bodies
471  using the `decode_content` request option. This is set to `true` by default
472  to decode the response body if it comes over the wire with a
473  `Content-Encoding`. Set this value to `false` to disable decoding the
474  response content, and pass a string to provide a request `Accept-Encoding`
475  header and turn on automatic response decoding. This feature now allows you
476  to pass an `Accept-Encoding` header in the headers of a request but still
477  disable automatic response decoding.
478  Closes https://github.com/guzzle/guzzle/issues/764
479* Added the ability to throw an exception immediately when transferring
480  requests in parallel. Closes https://github.com/guzzle/guzzle/issues/760
481* Updating guzzlehttp/streams dependency to ~2.1
482* No longer utilizing the now deprecated namespaced methods from the stream
483  package.
485## 4.1.8 - 2014-08-14
487* Fixed an issue in the CurlFactory that caused setting the `stream=false`
488  request option to throw an exception.
489  See: https://github.com/guzzle/guzzle/issues/769
490* TransactionIterator now calls rewind on the inner iterator.
491  See: https://github.com/guzzle/guzzle/pull/765
492* You can now set the `Content-Type` header to `multipart/form-data`
493  when creating POST requests to force multipart bodies.
494  See https://github.com/guzzle/guzzle/issues/768
496## 4.1.7 - 2014-08-07
498* Fixed an error in the HistoryPlugin that caused the same request and response
499  to be logged multiple times when an HTTP protocol error occurs.
500* Ensuring that cURL does not add a default Content-Type when no Content-Type
501  has been supplied by the user. This prevents the adapter layer from modifying
502  the request that is sent over the wire after any listeners may have already
503  put the request in a desired state (e.g., signed the request).
504* Throwing an exception when you attempt to send requests that have the
505  "stream" set to true in parallel using the MultiAdapter.
506* Only calling curl_multi_select when there are active cURL handles. This was
507  previously changed and caused performance problems on some systems due to PHP
508  always selecting until the maximum select timeout.
509* Fixed a bug where multipart/form-data POST fields were not correctly
510  aggregated (e.g., values with "&").
512## 4.1.6 - 2014-08-03
514* Added helper methods to make it easier to represent messages as strings,
515  including getting the start line and getting headers as a string.
517## 4.1.5 - 2014-08-02
519* Automatically retrying cURL "Connection died, retrying a fresh connect"
520  errors when possible.
521* cURL implementation cleanup
522* Allowing multiple event subscriber listeners to be registered per event by
523  passing an array of arrays of listener configuration.
525## 4.1.4 - 2014-07-22
527* Fixed a bug that caused multi-part POST requests with more than one field to
528  serialize incorrectly.
529* Paths can now be set to "0"
530* `ResponseInterface::xml` now accepts a `libxml_options` option and added a
531  missing default argument that was required when parsing XML response bodies.
532* A `save_to` stream is now created lazily, which means that files are not
533  created on disk unless a request succeeds.
535## 4.1.3 - 2014-07-15
537* Various fixes to multipart/form-data POST uploads
538* Wrapping function.php in an if-statement to ensure Guzzle can be used
539  globally and in a Composer install
540* Fixed an issue with generating and merging in events to an event array
541* POST headers are only applied before sending a request to allow you to change
542  the query aggregator used before uploading
543* Added much more robust query string parsing
544* Fixed various parsing and normalization issues with URLs
545* Fixing an issue where multi-valued headers were not being utilized correctly
546  in the StreamAdapter
548## 4.1.2 - 2014-06-18
550* Added support for sending payloads with GET requests
552## 4.1.1 - 2014-06-08
554* Fixed an issue related to using custom message factory options in subclasses
555* Fixed an issue with nested form fields in a multi-part POST
556* Fixed an issue with using the `json` request option for POST requests
557* Added `ToArrayInterface` to `GuzzleHttp\Cookie\CookieJar`
559## 4.1.0 - 2014-05-27
561* Added a `json` request option to easily serialize JSON payloads.
562* Added a `GuzzleHttp\json_decode()` wrapper to safely parse JSON.
563* Added `setPort()` and `getPort()` to `GuzzleHttp\Message\RequestInterface`.
564* Added the ability to provide an emitter to a client in the client constructor.
565* Added the ability to persist a cookie session using $_SESSION.
566* Added a trait that can be used to add event listeners to an iterator.
567* Removed request method constants from RequestInterface.
568* Fixed warning when invalid request start-lines are received.
569* Updated MessageFactory to work with custom request option methods.
570* Updated cacert bundle to latest build.
5724.0.2 (2014-04-16)
575* Proxy requests using the StreamAdapter now properly use request_fulluri (#632)
576* Added the ability to set scalars as POST fields (#628)
578## 4.0.1 - 2014-04-04
580* The HTTP status code of a response is now set as the exception code of
581  RequestException objects.
582* 303 redirects will now correctly switch from POST to GET requests.
583* The default parallel adapter of a client now correctly uses the MultiAdapter.
584* HasDataTrait now initializes the internal data array as an empty array so
585  that the toArray() method always returns an array.
587## 4.0.0 - 2014-03-29
589* For more information on the 4.0 transition, see:
590  http://mtdowling.com/blog/2014/03/15/guzzle-4-rc/
591* For information on changes and upgrading, see:
592  https://github.com/guzzle/guzzle/blob/master/UPGRADING.md#3x-to-40
593* Added `GuzzleHttp\batch()` as a convenience function for sending requests in
594  parallel without needing to write asynchronous code.
595* Restructured how events are added to `GuzzleHttp\ClientInterface::sendAll()`.
596  You can now pass a callable or an array of associative arrays where each
597  associative array contains the "fn", "priority", and "once" keys.
599## 4.0.0.rc-2 - 2014-03-25
601* Removed `getConfig()` and `setConfig()` from clients to avoid confusion
602  around whether things like base_url, message_factory, etc. should be able to
603  be retrieved or modified.
604* Added `getDefaultOption()` and `setDefaultOption()` to ClientInterface
605* functions.php functions were renamed using snake_case to match PHP idioms
606* Added support for `HTTP_PROXY`, `HTTPS_PROXY`, and
607  `GUZZLE_CURL_SELECT_TIMEOUT` environment variables
608* Added the ability to specify custom `sendAll()` event priorities
609* Added the ability to specify custom stream context options to the stream
610  adapter.
611* Added a functions.php function for `get_path()` and `set_path()`
612* CurlAdapter and MultiAdapter now use a callable to generate curl resources
613* MockAdapter now properly reads a body and emits a `headers` event
614* Updated Url class to check if a scheme and host are set before adding ":"
615  and "//". This allows empty Url (e.g., "") to be serialized as "".
616* Parsing invalid XML no longer emits warnings
617* Curl classes now properly throw AdapterExceptions
618* Various performance optimizations
619* Streams are created with the faster `Stream\create()` function
620* Marked deprecation_proxy() as internal
621* Test server is now a collection of static methods on a class
623## 4.0.0-rc.1 - 2014-03-15
625* See https://github.com/guzzle/guzzle/blob/master/UPGRADING.md#3x-to-40
627## 3.8.1 - 2014-01-28
629* Bug: Always using GET requests when redirecting from a 303 response
630* Bug: CURLOPT_SSL_VERIFYHOST is now correctly set to false when setting `$certificateAuthority` to false in
631  `Guzzle\Http\ClientInterface::setSslVerification()`
632* Bug: RedirectPlugin now uses strict RFC 3986 compliance when combining a base URL with a relative URL
633* Bug: The body of a request can now be set to `"0"`
634* Sending PHP stream requests no longer forces `HTTP/1.0`
635* Adding more information to ExceptionCollection exceptions so that users have more context, including a stack trace of
636  each sub-exception
637* Updated the `$ref` attribute in service descriptions to merge over any existing parameters of a schema (rather than
638  clobbering everything).
639* Merging URLs will now use the query string object from the relative URL (thus allowing custom query aggregators)
640* Query strings are now parsed in a way that they do no convert empty keys with no value to have a dangling `=`.
641  For example `foo&bar=baz` is now correctly parsed and recognized as `foo&bar=baz` rather than `foo=&bar=baz`.
642* Now properly escaping the regular expression delimiter when matching Cookie domains.
643* Network access is now disabled when loading XML documents
645## 3.8.0 - 2013-12-05
647* Added the ability to define a POST name for a file
648* JSON response parsing now properly walks additionalProperties
649* cURL error code 18 is now retried automatically in the BackoffPlugin
650* Fixed a cURL error when URLs contain fragments
651* Fixed an issue in the BackoffPlugin retry event where it was trying to access all exceptions as if they were
652  CurlExceptions
653* CURLOPT_PROGRESS function fix for PHP 5.5 (69fcc1e)
654* Added the ability for Guzzle to work with older versions of cURL that do not support `CURLOPT_TIMEOUT_MS`
655* Fixed a bug that was encountered when parsing empty header parameters
656* UriTemplate now has a `setRegex()` method to match the docs
657* The `debug` request parameter now checks if it is truthy rather than if it exists
658* Setting the `debug` request parameter to true shows verbose cURL output instead of using the LogPlugin
659* Added the ability to combine URLs using strict RFC 3986 compliance
660* Command objects can now return the validation errors encountered by the command
661* Various fixes to cache revalidation (#437 and 29797e5)
662* Various fixes to the AsyncPlugin
663* Cleaned up build scripts
665## 3.7.4 - 2013-10-02
667* Bug fix: 0 is now an allowed value in a description parameter that has a default value (#430)
668* Bug fix: SchemaFormatter now returns an integer when formatting to a Unix timestamp
669  (see https://github.com/aws/aws-sdk-php/issues/147)
670* Bug fix: Cleaned up and fixed URL dot segment removal to properly resolve internal dots
671* Minimum PHP version is now properly specified as 5.3.3 (up from 5.3.2) (#420)
672* Updated the bundled cacert.pem (#419)
673* OauthPlugin now supports adding authentication to headers or query string (#425)
675## 3.7.3 - 2013-09-08
677* Added the ability to get the exception associated with a request/command when using `MultiTransferException` and
678  `CommandTransferException`.
679* Setting `additionalParameters` of a response to false is now honored when parsing responses with a service description
680* Schemas are only injected into response models when explicitly configured.
681* No longer guessing Content-Type based on the path of a request. Content-Type is now only guessed based on the path of
682  an EntityBody.
683* Bug fix: ChunkedIterator can now properly chunk a \Traversable as well as an \Iterator.
684* Bug fix: FilterIterator now relies on `\Iterator` instead of `\Traversable`.
685* Bug fix: Gracefully handling malformed responses in RequestMediator::writeResponseBody()
686* Bug fix: Replaced call to canCache with canCacheRequest in the CallbackCanCacheStrategy of the CachePlugin
687* Bug fix: Visiting XML attributes first before visiting XML children when serializing requests
688* Bug fix: Properly parsing headers that contain commas contained in quotes
689* Bug fix: mimetype guessing based on a filename is now case-insensitive
691## 3.7.2 - 2013-08-02
693* Bug fix: Properly URL encoding paths when using the PHP-only version of the UriTemplate expander
694  See https://github.com/guzzle/guzzle/issues/371
695* Bug fix: Cookie domains are now matched correctly according to RFC 6265
696  See https://github.com/guzzle/guzzle/issues/377
697* Bug fix: GET parameters are now used when calculating an OAuth signature
698* Bug fix: Fixed an issue with cache revalidation where the If-None-Match header was being double quoted
699* `Guzzle\Common\AbstractHasDispatcher::dispatch()` now returns the event that was dispatched
700* `Guzzle\Http\QueryString::factory()` now guesses the most appropriate query aggregator to used based on the input.
701  See https://github.com/guzzle/guzzle/issues/379
702* Added a way to add custom domain objects to service description parsing using the `operation.parse_class` event. See
703  https://github.com/guzzle/guzzle/pull/380
704* cURL multi cleanup and optimizations
706## 3.7.1 - 2013-07-05
708* Bug fix: Setting default options on a client now works
709* Bug fix: Setting options on HEAD requests now works. See #352
710* Bug fix: Moving stream factory before send event to before building the stream. See #353
711* Bug fix: Cookies no longer match on IP addresses per RFC 6265
712* Bug fix: Correctly parsing header parameters that are in `<>` and quotes
713* Added `cert` and `ssl_key` as request options
714* `Host` header can now diverge from the host part of a URL if the header is set manually
715* `Guzzle\Service\Command\LocationVisitor\Request\XmlVisitor` was rewritten to change from using SimpleXML to XMLWriter
716* OAuth parameters are only added via the plugin if they aren't already set
717* Exceptions are now thrown when a URL cannot be parsed
718* Returning `false` if `Guzzle\Http\EntityBody::getContentMd5()` fails
719* Not setting a `Content-MD5` on a command if calculating the Content-MD5 fails via the CommandContentMd5Plugin
721## 3.7.0 - 2013-06-10
723* See UPGRADING.md for more information on how to upgrade.
724* Requests now support the ability to specify an array of $options when creating a request to more easily modify a
725  request. You can pass a 'request.options' configuration setting to a client to apply default request options to
726  every request created by a client (e.g. default query string variables, headers, curl options, etc.).
727* Added a static facade class that allows you to use Guzzle with static methods and mount the class to `\Guzzle`.
728  See `Guzzle\Http\StaticClient::mount`.
729* Added `command.request_options` to `Guzzle\Service\Command\AbstractCommand` to pass request options to requests
730      created by a command (e.g. custom headers, query string variables, timeout settings, etc.).
731* Stream size in `Guzzle\Stream\PhpStreamRequestFactory` will now be set if Content-Length is returned in the
732  headers of a response
733* Added `Guzzle\Common\Collection::setPath($path, $value)` to set a value into an array using a nested key
734  (e.g. `$collection->setPath('foo/baz/bar', 'test'); echo $collection['foo']['bar']['bar'];`)
735* ServiceBuilders now support storing and retrieving arbitrary data
736* CachePlugin can now purge all resources for a given URI
737* CachePlugin can automatically purge matching cached items when a non-idempotent request is sent to a resource
738* CachePlugin now uses the Vary header to determine if a resource is a cache hit
739* `Guzzle\Http\Message\Response` now implements `\Serializable`
740* Added `Guzzle\Cache\CacheAdapterFactory::fromCache()` to more easily create cache adapters
741* `Guzzle\Service\ClientInterface::execute()` now accepts an array, single command, or Traversable
742* Fixed a bug in `Guzzle\Http\Message\Header\Link::addLink()`
743* Better handling of calculating the size of a stream in `Guzzle\Stream\Stream` using fstat() and caching the size
744* `Guzzle\Common\Exception\ExceptionCollection` now creates a more readable exception message
745* Fixing BC break: Added back the MonologLogAdapter implementation rather than extending from PsrLog so that older
746  Symfony users can still use the old version of Monolog.
747* Fixing BC break: Added the implementation back in for `Guzzle\Http\Message\AbstractMessage::getTokenizedHeader()`.
748  Now triggering an E_USER_DEPRECATED warning when used. Use `$message->getHeader()->parseParams()`.
749* Several performance improvements to `Guzzle\Common\Collection`
750* Added an `$options` argument to the end of the following methods of `Guzzle\Http\ClientInterface`:
751  createRequest, head, delete, put, patch, post, options, prepareRequest
752* Added an `$options` argument to the end of `Guzzle\Http\Message\Request\RequestFactoryInterface::createRequest()`
753* Added an `applyOptions()` method to `Guzzle\Http\Message\Request\RequestFactoryInterface`
754* Changed `Guzzle\Http\ClientInterface::get($uri = null, $headers = null, $body = null)` to
755  `Guzzle\Http\ClientInterface::get($uri = null, $headers = null, $options = array())`. You can still pass in a
756  resource, string, or EntityBody into the $options parameter to specify the download location of the response.
757* Changed `Guzzle\Common\Collection::__construct($data)` to no longer accepts a null value for `$data` but a
758  default `array()`
759* Added `Guzzle\Stream\StreamInterface::isRepeatable`
760* Removed `Guzzle\Http\ClientInterface::setDefaultHeaders(). Use
761  $client->getConfig()->setPath('request.options/headers/{header_name}', 'value')`. or
762  $client->getConfig()->setPath('request.options/headers', array('header_name' => 'value'))`.
763* Removed `Guzzle\Http\ClientInterface::getDefaultHeaders(). Use $client->getConfig()->getPath('request.options/headers')`.
764* Removed `Guzzle\Http\ClientInterface::expandTemplate()`
765* Removed `Guzzle\Http\ClientInterface::setRequestFactory()`
766* Removed `Guzzle\Http\ClientInterface::getCurlMulti()`
767* Removed `Guzzle\Http\Message\RequestInterface::canCache`
768* Removed `Guzzle\Http\Message\RequestInterface::setIsRedirect`
769* Removed `Guzzle\Http\Message\RequestInterface::isRedirect`
770* Made `Guzzle\Http\Client::expandTemplate` and `getUriTemplate` protected methods.
771* You can now enable E_USER_DEPRECATED warnings to see if you are using a deprecated method by setting
772  `Guzzle\Common\Version::$emitWarnings` to true.
773* Marked `Guzzle\Http\Message\Request::isResponseBodyRepeatable()` as deprecated. Use
774      `$request->getResponseBody()->isRepeatable()` instead.
775* Marked `Guzzle\Http\Message\Request::canCache()` as deprecated. Use
776  `Guzzle\Plugin\Cache\DefaultCanCacheStrategy->canCacheRequest()` instead.
777* Marked `Guzzle\Http\Message\Request::canCache()` as deprecated. Use
778  `Guzzle\Plugin\Cache\DefaultCanCacheStrategy->canCacheRequest()` instead.
779* Marked `Guzzle\Http\Message\Request::setIsRedirect()` as deprecated. Use the HistoryPlugin instead.
780* Marked `Guzzle\Http\Message\Request::isRedirect()` as deprecated. Use the HistoryPlugin instead.
781* Marked `Guzzle\Cache\CacheAdapterFactory::factory()` as deprecated
782* Marked 'command.headers', 'command.response_body' and 'command.on_complete' as deprecated for AbstractCommand.
783  These will work through Guzzle 4.0
784* Marked 'request.params' for `Guzzle\Http\Client` as deprecated. Use [request.options][params].
785* Marked `Guzzle\Service\Client::enableMagicMethods()` as deprecated. Magic methods can no longer be disabled on a Guzzle\Service\Client.
786* Marked `Guzzle\Service\Client::getDefaultHeaders()` as deprecated. Use $client->getConfig()->getPath('request.options/headers')`.
787* Marked `Guzzle\Service\Client::setDefaultHeaders()` as deprecated. Use $client->getConfig()->setPath('request.options/headers/{header_name}', 'value')`.
788* Marked `Guzzle\Parser\Url\UrlParser` as deprecated. Just use PHP's `parse_url()` and percent encode your UTF-8.
789* Marked `Guzzle\Common\Collection::inject()` as deprecated.
790* Marked `Guzzle\Plugin\CurlAuth\CurlAuthPlugin` as deprecated. Use `$client->getConfig()->setPath('request.options/auth', array('user', 'pass', 'Basic|Digest');`
791* CacheKeyProviderInterface and DefaultCacheKeyProvider are no longer used. All of this logic is handled in a
792  CacheStorageInterface. These two objects and interface will be removed in a future version.
793* Always setting X-cache headers on cached responses
794* Default cache TTLs are now handled by the CacheStorageInterface of a CachePlugin
795* `CacheStorageInterface::cache($key, Response $response, $ttl = null)` has changed to `cache(RequestInterface
796  $request, Response $response);`
797* `CacheStorageInterface::fetch($key)` has changed to `fetch(RequestInterface $request);`
798* `CacheStorageInterface::delete($key)` has changed to `delete(RequestInterface $request);`
799* Added `CacheStorageInterface::purge($url)`
800* `DefaultRevalidation::__construct(CacheKeyProviderInterface $cacheKey, CacheStorageInterface $cache, CachePlugin
801  $plugin)` has changed to `DefaultRevalidation::__construct(CacheStorageInterface $cache,
802  CanCacheStrategyInterface $canCache = null)`
803* Added `RevalidationInterface::shouldRevalidate(RequestInterface $request, Response $response)`
805## 3.6.0 - 2013-05-29
807* ServiceDescription now implements ToArrayInterface
808* Added command.hidden_params to blacklist certain headers from being treated as additionalParameters
809* Guzzle can now correctly parse incomplete URLs
810* Mixed casing of headers are now forced to be a single consistent casing across all values for that header.
811* Messages internally use a HeaderCollection object to delegate handling case-insensitive header resolution
812* Removed the whole changedHeader() function system of messages because all header changes now go through addHeader().
813* Specific header implementations can be created for complex headers. When a message creates a header, it uses a
814  HeaderFactory which can map specific headers to specific header classes. There is now a Link header and
815  CacheControl header implementation.
816* Removed from interface: Guzzle\Http\ClientInterface::setUriTemplate
817* Removed from interface: Guzzle\Http\ClientInterface::setCurlMulti()
818* Removed Guzzle\Http\Message\Request::receivedRequestHeader() and implemented this functionality in
819  Guzzle\Http\Curl\RequestMediator
820* Removed the optional $asString parameter from MessageInterface::getHeader(). Just cast the header to a string.
821* Removed the optional $tryChunkedTransfer option from Guzzle\Http\Message\EntityEnclosingRequestInterface
822* Removed the $asObjects argument from Guzzle\Http\Message\MessageInterface::getHeaders()
823* Removed Guzzle\Parser\ParserRegister::get(). Use getParser()
824* Removed Guzzle\Parser\ParserRegister::set(). Use registerParser().
825* All response header helper functions return a string rather than mixing Header objects and strings inconsistently
826* Removed cURL blacklist support. This is no longer necessary now that Expect, Accept, etc. are managed by Guzzle
827  directly via interfaces
828* Removed the injecting of a request object onto a response object. The methods to get and set a request still exist
829  but are a no-op until removed.
830* Most classes that used to require a `Guzzle\Service\Command\CommandInterface` typehint now request a
831  `Guzzle\Service\Command\ArrayCommandInterface`.
832* Added `Guzzle\Http\Message\RequestInterface::startResponse()` to the RequestInterface to handle injecting a response
833  on a request while the request is still being transferred
834* The ability to case-insensitively search for header values
835* Guzzle\Http\Message\Header::hasExactHeader
836* Guzzle\Http\Message\Header::raw. Use getAll()
837* Deprecated cache control specific methods on Guzzle\Http\Message\AbstractMessage. Use the CacheControl header object
838  instead.
839* `Guzzle\Service\Command\CommandInterface` now extends from ToArrayInterface and ArrayAccess
840* Added the ability to cast Model objects to a string to view debug information.
842## 3.5.0 - 2013-05-13
844* Bug: Fixed a regression so that request responses are parsed only once per oncomplete event rather than multiple times
845* Bug: Better cleanup of one-time events across the board (when an event is meant to fire once, it will now remove
846  itself from the EventDispatcher)
847* Bug: `Guzzle\Log\MessageFormatter` now properly writes "total_time" and "connect_time" values
848* Bug: Cloning an EntityEnclosingRequest now clones the EntityBody too
849* Bug: Fixed an undefined index error when parsing nested JSON responses with a sentAs parameter that reference a
850  non-existent key
851* Bug: All __call() method arguments are now required (helps with mocking frameworks)
852* Deprecating Response::getRequest() and now using a shallow clone of a request object to remove a circular reference
853  to help with refcount based garbage collection of resources created by sending a request
854* Deprecating ZF1 cache and log adapters. These will be removed in the next major version.
855* Deprecating `Response::getPreviousResponse()` (method signature still exists, but it's deprecated). Use the
856  HistoryPlugin for a history.
857* Added a `responseBody` alias for the `response_body` location
858* Refactored internals to no longer rely on Response::getRequest()
859* HistoryPlugin can now be cast to a string
860* HistoryPlugin now logs transactions rather than requests and responses to more accurately keep track of the requests
861  and responses that are sent over the wire
862* Added `getEffectiveUrl()` and `getRedirectCount()` to Response objects
864## 3.4.3 - 2013-04-30
866* Bug fix: Fixing bug introduced in 3.4.2 where redirect responses are duplicated on the final redirected response
867* Added a check to re-extract the temp cacert bundle from the phar before sending each request
869## 3.4.2 - 2013-04-29
871* Bug fix: Stream objects now work correctly with "a" and "a+" modes
872* Bug fix: Removing `Transfer-Encoding: chunked` header when a Content-Length is present
873* Bug fix: AsyncPlugin no longer forces HEAD requests
874* Bug fix: DateTime timezones are now properly handled when using the service description schema formatter
875* Bug fix: CachePlugin now properly handles stale-if-error directives when a request to the origin server fails
876* Setting a response on a request will write to the custom request body from the response body if one is specified
877* LogPlugin now writes to php://output when STDERR is undefined
878* Added the ability to set multiple POST files for the same key in a single call
879* application/x-www-form-urlencoded POSTs now use the utf-8 charset by default
880* Added the ability to queue CurlExceptions to the MockPlugin
881* Cleaned up how manual responses are queued on requests (removed "queued_response" and now using request.before_send)
882* Configuration loading now allows remote files
884## 3.4.1 - 2013-04-16
886* Large refactoring to how CurlMulti handles work. There is now a proxy that sits in front of a pool of CurlMulti
887  handles. This greatly simplifies the implementation, fixes a couple bugs, and provides a small performance boost.
888* Exceptions are now properly grouped when sending requests in parallel
889* Redirects are now properly aggregated when a multi transaction fails
890* Redirects now set the response on the original object even in the event of a failure
891* Bug fix: Model names are now properly set even when using $refs
892* Added support for PHP 5.5's CurlFile to prevent warnings with the deprecated @ syntax
893* Added support for oauth_callback in OAuth signatures
894* Added support for oauth_verifier in OAuth signatures
895* Added support to attempt to retrieve a command first literally, then ucfirst, the with inflection
897## 3.4.0 - 2013-04-11
899* Bug fix: URLs are now resolved correctly based on http://tools.ietf.org/html/rfc3986#section-5.2. #289
900* Bug fix: Absolute URLs with a path in a service description will now properly override the base URL. #289
901* Bug fix: Parsing a query string with a single PHP array value will now result in an array. #263
902* Bug fix: Better normalization of the User-Agent header to prevent duplicate headers. #264.
903* Bug fix: Added `number` type to service descriptions.
904* Bug fix: empty parameters are removed from an OAuth signature
905* Bug fix: Revalidating a cache entry prefers the Last-Modified over the Date header
906* Bug fix: Fixed "array to string" error when validating a union of types in a service description
907* Bug fix: Removed code that attempted to determine the size of a stream when data is written to the stream
908* Bug fix: Not including an `oauth_token` if the value is null in the OauthPlugin.
909* Bug fix: Now correctly aggregating successful requests and failed requests in CurlMulti when a redirect occurs.
910* The new default CURLOPT_TIMEOUT setting has been increased to 150 seconds so that Guzzle works on poor connections.
911* Added a feature to EntityEnclosingRequest::setBody() that will automatically set the Content-Type of the request if
912  the Content-Type can be determined based on the entity body or the path of the request.
913* Added the ability to overwrite configuration settings in a client when grabbing a throwaway client from a builder.
914* Added support for a PSR-3 LogAdapter.
915* Added a `command.after_prepare` event
916* Added `oauth_callback` parameter to the OauthPlugin
917* Added the ability to create a custom stream class when using a stream factory
918* Added a CachingEntityBody decorator
919* Added support for `additionalParameters` in service descriptions to define how custom parameters are serialized.
920* The bundled SSL certificate is now provided in the phar file and extracted when running Guzzle from a phar.
921* You can now send any EntityEnclosingRequest with POST fields or POST files and cURL will handle creating bodies
922* POST requests using a custom entity body are now treated exactly like PUT requests but with a custom cURL method. This
923  means that the redirect behavior of POST requests with custom bodies will not be the same as POST requests that use
924  POST fields or files (the latter is only used when emulating a form POST in the browser).
925* Lots of cleanup to CurlHandle::factory and RequestFactory::createRequest
927## 3.3.1 - 2013-03-10
929* Added the ability to create PHP streaming responses from HTTP requests
930* Bug fix: Running any filters when parsing response headers with service descriptions
931* Bug fix: OauthPlugin fixes to allow for multi-dimensional array signing, and sorting parameters before signing
932* Bug fix: Removed the adding of default empty arrays and false Booleans to responses in order to be consistent across
933  response location visitors.
934* Bug fix: Removed the possibility of creating configuration files with circular dependencies
935* RequestFactory::create() now uses the key of a POST file when setting the POST file name
936* Added xmlAllowEmpty to serialize an XML body even if no XML specific parameters are set
938## 3.3.0 - 2013-03-03
940* A large number of performance optimizations have been made
941* Bug fix: Added 'wb' as a valid write mode for streams
942* Bug fix: `Guzzle\Http\Message\Response::json()` now allows scalar values to be returned
943* Bug fix: Fixed bug in `Guzzle\Http\Message\Response` where wrapping quotes were stripped from `getEtag()`
944* BC: Removed `Guzzle\Http\Utils` class
945* BC: Setting a service description on a client will no longer modify the client's command factories.
946* BC: Emitting IO events from a RequestMediator is now a parameter that must be set in a request's curl options using
947  the 'emit_io' key. This was previously set under a request's parameters using 'curl.emit_io'
948* BC: `Guzzle\Stream\Stream::getWrapper()` and `Guzzle\Stream\Stream::getSteamType()` are no longer converted to
949  lowercase
950* Operation parameter objects are now lazy loaded internally
951* Added ErrorResponsePlugin that can throw errors for responses defined in service description operations' errorResponses
952* Added support for instantiating responseType=class responseClass classes. Classes must implement
953  `Guzzle\Service\Command\ResponseClassInterface`
954* Added support for additionalProperties for top-level parameters in responseType=model responseClasses. These
955  additional properties also support locations and can be used to parse JSON responses where the outermost part of the
956  JSON is an array
957* Added support for nested renaming of JSON models (rename sentAs to name)
958* CachePlugin
959    * Added support for stale-if-error so that the CachePlugin can now serve stale content from the cache on error
960    * Debug headers can now added to cached response in the CachePlugin
962## 3.2.0 - 2013-02-14
964* CurlMulti is no longer reused globally. A new multi object is created per-client. This helps to isolate clients.
965* URLs with no path no longer contain a "/" by default
966* Guzzle\Http\QueryString does no longer manages the leading "?". This is now handled in Guzzle\Http\Url.
967* BadResponseException no longer includes the full request and response message
968* Adding setData() to Guzzle\Service\Description\ServiceDescriptionInterface
969* Adding getResponseBody() to Guzzle\Http\Message\RequestInterface
970* Various updates to classes to use ServiceDescriptionInterface type hints rather than ServiceDescription
971* Header values can now be normalized into distinct values when multiple headers are combined with a comma separated list
972* xmlEncoding can now be customized for the XML declaration of a XML service description operation
973* Guzzle\Http\QueryString now uses Guzzle\Http\QueryAggregator\QueryAggregatorInterface objects to add custom value
974  aggregation and no longer uses callbacks
975* The URL encoding implementation of Guzzle\Http\QueryString can now be customized
976* Bug fix: Filters were not always invoked for array service description parameters
977* Bug fix: Redirects now use a target response body rather than a temporary response body
978* Bug fix: The default exponential backoff BackoffPlugin was not giving when the request threshold was exceeded
979* Bug fix: Guzzle now takes the first found value when grabbing Cache-Control directives
981## 3.1.2 - 2013-01-27
983* Refactored how operation responses are parsed. Visitors now include a before() method responsible for parsing the
984  response body. For example, the XmlVisitor now parses the XML response into an array in the before() method.
985* Fixed an issue where cURL would not automatically decompress responses when the Accept-Encoding header was sent
986* CURLOPT_SSL_VERIFYHOST is never set to 1 because it is deprecated (see 5e0ff2ef20f839e19d1eeb298f90ba3598784444)
987* Fixed a bug where redirect responses were not chained correctly using getPreviousResponse()
988* Setting default headers on a client after setting the user-agent will not erase the user-agent setting
990## 3.1.1 - 2013-01-20
992* Adding wildcard support to Guzzle\Common\Collection::getPath()
993* Adding alias support to ServiceBuilder configs
994* Adding Guzzle\Service\Resource\CompositeResourceIteratorFactory and cleaning up factory interface
996## 3.1.0 - 2013-01-12
998* BC: CurlException now extends from RequestException rather than BadResponseException
999* BC: Renamed Guzzle\Plugin\Cache\CanCacheStrategyInterface::canCache() to canCacheRequest() and added CanCacheResponse()
1000* Added getData to ServiceDescriptionInterface
1001* Added context array to RequestInterface::setState()
1002* Bug: Removing hard dependency on the BackoffPlugin from Guzzle\Http
1003* Bug: Adding required content-type when JSON request visitor adds JSON to a command
1004* Bug: Fixing the serialization of a service description with custom data
1005* Made it easier to deal with exceptions thrown when transferring commands or requests in parallel by providing
1006  an array of successful and failed responses
1007* Moved getPath from Guzzle\Service\Resource\Model to Guzzle\Common\Collection
1008* Added Guzzle\Http\IoEmittingEntityBody
1009* Moved command filtration from validators to location visitors
1010* Added `extends` attributes to service description parameters
1011* Added getModels to ServiceDescriptionInterface
1013## 3.0.7 - 2012-12-19
1015* Fixing phar detection when forcing a cacert to system if null or true
1016* Allowing filename to be passed to `Guzzle\Http\Message\Request::setResponseBody()`
1017* Cleaning up `Guzzle\Common\Collection::inject` method
1018* Adding a response_body location to service descriptions
1020## 3.0.6 - 2012-12-09
1022* CurlMulti performance improvements
1023* Adding setErrorResponses() to Operation
1024* composer.json tweaks
1026## 3.0.5 - 2012-11-18
1028* Bug: Fixing an infinite recursion bug caused from revalidating with the CachePlugin
1029* Bug: Response body can now be a string containing "0"
1030* Bug: Using Guzzle inside of a phar uses system by default but now allows for a custom cacert
1031* Bug: QueryString::fromString now properly parses query string parameters that contain equal signs
1032* Added support for XML attributes in service description responses
1033* DefaultRequestSerializer now supports array URI parameter values for URI template expansion
1034* Added better mimetype guessing to requests and post files
1036## 3.0.4 - 2012-11-11
1038* Bug: Fixed a bug when adding multiple cookies to a request to use the correct glue value
1039* Bug: Cookies can now be added that have a name, domain, or value set to "0"
1040* Bug: Using the system cacert bundle when using the Phar
1041* Added json and xml methods to Response to make it easier to parse JSON and XML response data into data structures
1042* Enhanced cookie jar de-duplication
1043* Added the ability to enable strict cookie jars that throw exceptions when invalid cookies are added
1044* Added setStream to StreamInterface to actually make it possible to implement custom rewind behavior for entity bodies
1045* Added the ability to create any sort of hash for a stream rather than just an MD5 hash
1047## 3.0.3 - 2012-11-04
1049* Implementing redirects in PHP rather than cURL
1050* Added PECL URI template extension and using as default parser if available
1051* Bug: Fixed Content-Length parsing of Response factory
1052* Adding rewind() method to entity bodies and streams. Allows for custom rewinding of non-repeatable streams.
1053* Adding ToArrayInterface throughout library
1054* Fixing OauthPlugin to create unique nonce values per request
1056## 3.0.2 - 2012-10-25
1058* Magic methods are enabled by default on clients
1059* Magic methods return the result of a command
1060* Service clients no longer require a base_url option in the factory
1061* Bug: Fixed an issue with URI templates where null template variables were being expanded
1063## 3.0.1 - 2012-10-22
1065* Models can now be used like regular collection objects by calling filter, map, etc.
1066* Models no longer require a Parameter structure or initial data in the constructor
1067* Added a custom AppendIterator to get around a PHP bug with the `\AppendIterator`
1069## 3.0.0 - 2012-10-15
1071* Rewrote service description format to be based on Swagger
1072    * Now based on JSON schema
1073    * Added nested input structures and nested response models
1074    * Support for JSON and XML input and output models
1075    * Renamed `commands` to `operations`
1076    * Removed dot class notation
1077    * Removed custom types
1078* Broke the project into smaller top-level namespaces to be more component friendly
1079* Removed support for XML configs and descriptions. Use arrays or JSON files.
1080* Removed the Validation component and Inspector
1081* Moved all cookie code to Guzzle\Plugin\Cookie
1082* Magic methods on a Guzzle\Service\Client now return the command un-executed.
1083* Calling getResult() or getResponse() on a command will lazily execute the command if needed.
1084* Now shipping with cURL's CA certs and using it by default
1085* Added previousResponse() method to response objects
1086* No longer sending Accept and Accept-Encoding headers on every request
1087* Only sending an Expect header by default when a payload is greater than 1MB
1088* Added/moved client options:
1089    * curl.blacklist to curl.option.blacklist
1090    * Added ssl.certificate_authority
1091* Added a Guzzle\Iterator component
1092* Moved plugins from Guzzle\Http\Plugin to Guzzle\Plugin
1093* Added a more robust backoff retry strategy (replaced the ExponentialBackoffPlugin)
1094* Added a more robust caching plugin
1095* Added setBody to response objects
1096* Updating LogPlugin to use a more flexible MessageFormatter
1097* Added a completely revamped build process
1098* Cleaning up Collection class and removing default values from the get method
1099* Fixed ZF2 cache adapters
1101## 2.8.8 - 2012-10-15
1103* Bug: Fixed a cookie issue that caused dot prefixed domains to not match where popular browsers did
1105## 2.8.7 - 2012-09-30
1107* Bug: Fixed config file aliases for JSON includes
1108* Bug: Fixed cookie bug on a request object by using CookieParser to parse cookies on requests
1109* Bug: Removing the path to a file when sending a Content-Disposition header on a POST upload
1110* Bug: Hardening request and response parsing to account for missing parts
1111* Bug: Fixed PEAR packaging
1112* Bug: Fixed Request::getInfo
1113* Bug: Fixed cases where CURLM_CALL_MULTI_PERFORM return codes were causing curl transactions to fail
1114* Adding the ability for the namespace Iterator factory to look in multiple directories
1115* Added more getters/setters/removers from service descriptions
1116* Added the ability to remove POST fields from OAuth signatures
1117* OAuth plugin now supports 2-legged OAuth
1119## 2.8.6 - 2012-09-05
1121* Added the ability to modify and build service descriptions
1122* Added the use of visitors to apply parameters to locations in service descriptions using the dynamic command
1123* Added a `json` parameter location
1124* Now allowing dot notation for classes in the CacheAdapterFactory
1125* Using the union of two arrays rather than an array_merge when extending service builder services and service params
1126* Ensuring that a service is a string before doing strpos() checks on it when substituting services for references
1127  in service builder config files.
1128* Services defined in two different config files that include one another will by default replace the previously
1129  defined service, but you can now create services that extend themselves and merge their settings over the previous
1130* The JsonLoader now supports aliasing filenames with different filenames. This allows you to alias something like
1131  '_default' with a default JSON configuration file.
1133## 2.8.5 - 2012-08-29
1135* Bug: Suppressed empty arrays from URI templates
1136* Bug: Added the missing $options argument from ServiceDescription::factory to enable caching
1137* Added support for HTTP responses that do not contain a reason phrase in the start-line
1138* AbstractCommand commands are now invokable
1139* Added a way to get the data used when signing an Oauth request before a request is sent
1141## 2.8.4 - 2012-08-15
1143* Bug: Custom delay time calculations are no longer ignored in the ExponentialBackoffPlugin
1144* Added the ability to transfer entity bodies as a string rather than streamed. This gets around curl error 65. Set `body_as_string` in a request's curl options to enable.
1145* Added a StreamInterface, EntityBodyInterface, and added ftell() to Guzzle\Common\Stream
1146* Added an AbstractEntityBodyDecorator and a ReadLimitEntityBody decorator to transfer only a subset of a decorated stream
1147* Stream and EntityBody objects will now return the file position to the previous position after a read required operation (e.g. getContentMd5())
1148* Added additional response status codes
1149* Removed SSL information from the default User-Agent header
1150* DELETE requests can now send an entity body
1151* Added an EventDispatcher to the ExponentialBackoffPlugin and added an ExponentialBackoffLogger to log backoff retries
1152* Added the ability of the MockPlugin to consume mocked request bodies
1153* LogPlugin now exposes request and response objects in the extras array
1155## 2.8.3 - 2012-07-30
1157* Bug: Fixed a case where empty POST requests were sent as GET requests
1158* Bug: Fixed a bug in ExponentialBackoffPlugin that caused fatal errors when retrying an EntityEnclosingRequest that does not have a body
1159* Bug: Setting the response body of a request to null after completing a request, not when setting the state of a request to new
1160* Added multiple inheritance to service description commands
1161* Added an ApiCommandInterface and added `getParamNames()` and `hasParam()`
1162* Removed the default 2mb size cutoff from the Md5ValidatorPlugin so that it now defaults to validating everything
1163* Changed CurlMulti::perform to pass a smaller timeout to CurlMulti::executeHandles
1165## 2.8.2 - 2012-07-24
1167* Bug: Query string values set to 0 are no longer dropped from the query string
1168* Bug: A Collection object is no longer created each time a call is made to `Guzzle\Service\Command\AbstractCommand::getRequestHeaders()`
1169* Bug: `+` is now treated as an encoded space when parsing query strings
1170* QueryString and Collection performance improvements
1171* Allowing dot notation for class paths in filters attribute of a service descriptions
1173## 2.8.1 - 2012-07-16
1175* Loosening Event Dispatcher dependency
1176* POST redirects can now be customized using CURLOPT_POSTREDIR
1178## 2.8.0 - 2012-07-15
1180* BC: Guzzle\Http\Query
1181    * Query strings with empty variables will always show an equal sign unless the variable is set to QueryString::BLANK (e.g. ?acl= vs ?acl)
1182    * Changed isEncodingValues() and isEncodingFields() to isUrlEncoding()
1183    * Changed setEncodeValues(bool) and setEncodeFields(bool) to useUrlEncoding(bool)
1184    * Changed the aggregation functions of QueryString to be static methods
1185    * Can now use fromString() with querystrings that have a leading ?
1186* cURL configuration values can be specified in service descriptions using `curl.` prefixed parameters
1187* Content-Length is set to 0 before emitting the request.before_send event when sending an empty request body
1188* Cookies are no longer URL decoded by default
1189* Bug: URI template variables set to null are no longer expanded
1191## 2.7.2 - 2012-07-02
1193* BC: Moving things to get ready for subtree splits. Moving Inflection into Common. Moving Guzzle\Http\Parser to Guzzle\Parser.
1194* BC: Removing Guzzle\Common\Batch\Batch::count() and replacing it with isEmpty()
1195* CachePlugin now allows for a custom request parameter function to check if a request can be cached
1196* Bug fix: CachePlugin now only caches GET and HEAD requests by default
1197* Bug fix: Using header glue when transferring headers over the wire
1198* Allowing deeply nested arrays for composite variables in URI templates
1199* Batch divisors can now return iterators or arrays
1201## 2.7.1 - 2012-06-26
1203* Minor patch to update version number in UA string
1204* Updating build process
1206## 2.7.0 - 2012-06-25
1208* BC: Inflection classes moved to Guzzle\Inflection. No longer static methods. Can now inject custom inflectors into classes.
1209* BC: Removed magic setX methods from commands
1210* BC: Magic methods mapped to service description commands are now inflected in the command factory rather than the client __call() method
1211* Verbose cURL options are no longer enabled by default. Set curl.debug to true on a client to enable.
1212* Bug: Now allowing colons in a response start-line (e.g. HTTP/1.1 503 Service Unavailable: Back-end server is at capacity)
1213* Guzzle\Service\Resource\ResourceIteratorApplyBatched now internally uses the Guzzle\Common\Batch namespace
1214* Added Guzzle\Service\Plugin namespace and a PluginCollectionPlugin
1215* Added the ability to set POST fields and files in a service description
1216* Guzzle\Http\EntityBody::factory() now accepts objects with a __toString() method
1217* Adding a command.before_prepare event to clients
1218* Added BatchClosureTransfer and BatchClosureDivisor
1219* BatchTransferException now includes references to the batch divisor and transfer strategies
1220* Fixed some tests so that they pass more reliably
1221* Added Guzzle\Common\Log\ArrayLogAdapter
1223## 2.6.6 - 2012-06-10
1225* BC: Removing Guzzle\Http\Plugin\BatchQueuePlugin
1226* BC: Removing Guzzle\Service\Command\CommandSet
1227* Adding generic batching system (replaces the batch queue plugin and command set)
1228* Updating ZF cache and log adapters and now using ZF's composer repository
1229* Bug: Setting the name of each ApiParam when creating through an ApiCommand
1230* Adding result_type, result_doc, deprecated, and doc_url to service descriptions
1231* Bug: Changed the default cookie header casing back to 'Cookie'
1233## 2.6.5 - 2012-06-03
1235* BC: Renaming Guzzle\Http\Message\RequestInterface::getResourceUri() to getResource()
1236* BC: Removing unused AUTH_BASIC and AUTH_DIGEST constants from
1237* BC: Guzzle\Http\Cookie is now used to manage Set-Cookie data, not Cookie data
1238* BC: Renaming methods in the CookieJarInterface
1239* Moving almost all cookie logic out of the CookiePlugin and into the Cookie or CookieJar implementations
1240* Making the default glue for HTTP headers ';' instead of ','
1241* Adding a removeValue to Guzzle\Http\Message\Header
1242* Adding getCookies() to request interface.
1243* Making it easier to add event subscribers to HasDispatcherInterface classes. Can now directly call addSubscriber()
1245## 2.6.4 - 2012-05-30
1247* BC: Cleaning up how POST files are stored in EntityEnclosingRequest objects. Adding PostFile class.
1248* BC: Moving ApiCommand specific functionality from the Inspector and on to the ApiCommand
1249* Bug: Fixing magic method command calls on clients
1250* Bug: Email constraint only validates strings
1251* Bug: Aggregate POST fields when POST files are present in curl handle
1252* Bug: Fixing default User-Agent header
1253* Bug: Only appending or prepending parameters in commands if they are specified
1254* Bug: Not requiring response reason phrases or status codes to match a predefined list of codes
1255* Allowing the use of dot notation for class namespaces when using instance_of constraint
1256* Added any_match validation constraint
1257* Added an AsyncPlugin
1258* Passing request object to the calculateWait method of the ExponentialBackoffPlugin
1259* Allowing the result of a command object to be changed
1260* Parsing location and type sub values when instantiating a service description rather than over and over at runtime
1262## 2.6.3 - 2012-05-23
1264* [BC] Guzzle\Common\FromConfigInterface no longer requires any config options.
1265* [BC] Refactoring how POST files are stored on an EntityEnclosingRequest. They are now separate from POST fields.
1266* You can now use an array of data when creating PUT request bodies in the request factory.
1267* Removing the requirement that HTTPS requests needed a Cache-Control: public directive to be cacheable.
1268* [Http] Adding support for Content-Type in multipart POST uploads per upload
1269* [Http] Added support for uploading multiple files using the same name (foo[0], foo[1])
1270* Adding more POST data operations for easier manipulation of POST data.
1271* You can now set empty POST fields.
1272* The body of a request is only shown on EntityEnclosingRequest objects that do not use POST files.
1273* Split the Guzzle\Service\Inspector::validateConfig method into two methods. One to initialize when a command is created, and one to validate.
1274* CS updates
1276## 2.6.2 - 2012-05-19
1278* [Http] Better handling of nested scope requests in CurlMulti.  Requests are now always prepares in the send() method rather than the addRequest() method.
1280## 2.6.1 - 2012-05-19
1282* [BC] Removing 'path' support in service descriptions.  Use 'uri'.
1283* [BC] Guzzle\Service\Inspector::parseDocBlock is now protected. Adding getApiParamsForClass() with cache.
1284* [BC] Removing Guzzle\Common\NullObject.  Use https://github.com/mtdowling/NullObject if you need it.
1285* [BC] Removing Guzzle\Common\XmlElement.
1286* All commands, both dynamic and concrete, have ApiCommand objects.
1287* Adding a fix for CurlMulti so that if all of the connections encounter some sort of curl error, then the loop exits.
1288* Adding checks to EntityEnclosingRequest so that empty POST files and fields are ignored.
1289* Making the method signature of Guzzle\Service\Builder\ServiceBuilder::factory more flexible.
1291## 2.6.0 - 2012-05-15
1293* [BC] Moving Guzzle\Service\Builder to Guzzle\Service\Builder\ServiceBuilder
1294* [BC] Executing a Command returns the result of the command rather than the command
1295* [BC] Moving all HTTP parsing logic to Guzzle\Http\Parsers. Allows for faster C implementations if needed.
1296* [BC] Changing the Guzzle\Http\Message\Response::setProtocol() method to accept a protocol and version in separate args.
1297* [BC] Moving ResourceIterator* to Guzzle\Service\Resource
1298* [BC] Completely refactored ResourceIterators to iterate over a cloned command object
1299* [BC] Moved Guzzle\Http\UriTemplate to Guzzle\Http\Parser\UriTemplate\UriTemplate
1300* [BC] Guzzle\Guzzle is now deprecated
1301* Moving Guzzle\Common\Guzzle::inject to Guzzle\Common\Collection::inject
1302* Adding Guzzle\Version class to give version information about Guzzle
1303* Adding Guzzle\Http\Utils class to provide getDefaultUserAgent() and getHttpDate()
1304* Adding Guzzle\Curl\CurlVersion to manage caching curl_version() data
1305* ServiceDescription and ServiceBuilder are now cacheable using similar configs
1306* Changing the format of XML and JSON service builder configs.  Backwards compatible.
1307* Cleaned up Cookie parsing
1308* Trimming the default Guzzle User-Agent header
1309* Adding a setOnComplete() method to Commands that is called when a command completes
1310* Keeping track of requests that were mocked in the MockPlugin
1311* Fixed a caching bug in the CacheAdapterFactory
1312* Inspector objects can be injected into a Command object
1313* Refactoring a lot of code and tests to be case insensitive when dealing with headers
1314* Adding Guzzle\Http\Message\HeaderComparison for easy comparison of HTTP headers using a DSL
1315* Adding the ability to set global option overrides to service builder configs
1316* Adding the ability to include other service builder config files from within XML and JSON files
1317* Moving the parseQuery method out of Url and on to QueryString::fromString() as a static factory method.
1319## 2.5.0 - 2012-05-08
1321* Major performance improvements
1322* [BC] Simplifying Guzzle\Common\Collection.  Please check to see if you are using features that are now deprecated.
1323* [BC] Using a custom validation system that allows a flyweight implementation for much faster validation. No longer using Symfony2 Validation component.
1324* [BC] No longer supporting "{{ }}" for injecting into command or UriTemplates.  Use "{}"
1325* Added the ability to passed parameters to all requests created by a client
1326* Added callback functionality to the ExponentialBackoffPlugin
1327* Using microtime in ExponentialBackoffPlugin to allow more granular backoff strategies.
1328* Rewinding request stream bodies when retrying requests
1329* Exception is thrown when JSON response body cannot be decoded
1330* Added configurable magic method calls to clients and commands.  This is off by default.
1331* Fixed a defect that added a hash to every parsed URL part
1332* Fixed duplicate none generation for OauthPlugin.
1333* Emitting an event each time a client is generated by a ServiceBuilder
1334* Using an ApiParams object instead of a Collection for parameters of an ApiCommand
1335* cache.* request parameters should be renamed to params.cache.*
1336* Added the ability to set arbitrary curl options on requests (disable_wire, progress, etc.). See CurlHandle.
1337* Added the ability to disable type validation of service descriptions
1338* ServiceDescriptions and ServiceBuilders are now Serializable