updated CHANGELOG: added sections and semver info at the top

Author: vimishor

CHANGELOG.md

@@ -1,97 +1,132 @@
 # Change Log
-All notable changes to this project will be documented in this file.
+All notable changes to this project will be documented in this file.  
+This project adheres to [Semantic Versioning](http://semver.org/).
 
-## 0.6.1 / 2015-xx-yy
+## [unreleased] / [unreleased]
 
+### Changed:
   - Better parameters validation and type hints.
-  - Fixed: Request body was build the wrong way when no ( _or wrong type of_ ) additional params where passed to Repository::create()
-  - Fixed: `Commits::all()` should use GET instead of POST
-  - Fixed: `Listener::delListener` did not properly deleted the listener.
-  - Fixed: Forward all available listener when a child class is requested via Api::api or Api::childClass.
+
+### Fixed:
+  - Request body was build the wrong way when no ( _or wrong type of_ ) additional params where passed to Repository::create()
+  - `Commits::all()` should use GET instead of POST
+  - `Listener::delListener` did not properly deleted the listener.
+  - Forward all available listener when a child class is requested via Api::api or Api::childClass.
 
 ## 0.6.0 / 2014-10-21
 
+### Added:
   - Added Changelog
   - Added `Api::api()*` as a single entry point for concrete apis ( *thanks to @digitalkaoz* )
+
+### Fixed:
   - Fixed `Privileges::grant()` parameters format ( [Fixes #22] )
+
+### Changed:
   - Marked `eabay/bitbucket-repo-sync` as conflict in composer.json
   - CS fixes
 
 [Fixes #22]: https://bitbucket.org/gentlero/bitbucket-api/issue/22/grant-account-privileges-to-repo
 
 ## 0.5.2 / 2014-07-09
 
+### Fixed:
   - Make tests go green again. ( *My bad and I'm sorry* ).
 
 ## 0.5.1 / 2014-07-08
 
+### Fixed:
   - Bug: A default content-type is added for POST and PUT, if none was given. ( [Fixes #19] )
 
 [Fixes #19]: https://bitbucket.org/gentlero/bitbucket-api/issue/19
 
 ## 0.5.0 / 2014-06-09
 
+### Added:
   - Allow setting custom `Request` and `Response` inside HTTP client, which should facilitate integration in 3rd party software.
+
+### Changed:
   - Implemented basic priority for listeners.
+
+### Fixed:
   - Bug: Missing content-type made `PullRequests::merge` and `PullRequests::declined` unusable.
 
 ## 0.4.1 / 2014-06-01
 
+### Fixed:
   - Bug: OAuthListener: Parameters may be included from the body if the content-type is urlencoded. ( [Fixes #18] )
 
 [Fixes #18]: https://bitbucket.org/gentlero/bitbucket-api/issue/18
 
 ## 0.4.0 / 2014-05-14
 
+### Added:
   - Added API 2.0 endpoints for `Users` ( *get, followers, following, repositories* )
   - Added API 2.0 endpoints for `Teams`. ( *profile, members, followers, following, repositories* )
   - Added API 2.0 endpoints for `BranchRestrictions`. ( *all, create, get, update, delete* )
   - Added `delListener()` method for `ClientInterface`.
+
+### Fixed:
   - Bug: Mandatory parameters inside PullRequest's methods were not checked.
+
+### Changed:
   - Documentation updated.
 
 ## 0.3.0 / 2014-05-12
 
-  Started to implement version 2.0 of the API. 
-    - All 1.0 endpoints that have a "twin" in version 2.0 will be updated to use the never version.
-    - All specific 2.0 endpoints will be added gradual.
+  Started to implement version 2.0 of the API.
+   - All 1.0 endpoints that have a "twin" in version 2.0 will be updated to use the never version.
+   - All specific 2.0 endpoints will be added gradual.
 
+### Added:
   - Implemented `Commits` and `Commits::Comments` endpoints for API 2.0
-  - Updated `Repository` to use API 2.0 (create, delete) and implemented endpoints specific to API 2.0 ( *watchers, forks* )
   - Added `Repository::get()` ( *API 2.0* )
-  - Updated `PullRequests::all()` to API 2.0
-  - Updated `PullRequests::Comments::get()` and `PullRequests::Comments::all()` to API 2.0
   - Added all endpoints for PullRequests ( *API 2.0* )
   - Added repositories endpoint ( *API 2.0* )
+
+### Changed:
+  - Updated `Repository` to use API 2.0 (create, delete) and implemented endpoints specific to API 2.0 ( *watchers, forks* )
+  - Updated `PullRequests::all()` to API 2.0
+  - Updated `PullRequests::Comments::get()` and `PullRequests::Comments::all()` to API 2.0
   - Updated `Repositories::PullRequests::all()` to allow `state` param.
   - CS fixes.
 
 
 ## 0.2.1 / 2014-04-21
 
+### Added:
   - Added `Repositories::PullRequests::all()` method to get a list of all pull requests.
 
 
 ## 0.2.0 / 2014-02-24
 
+### Fixed:
   - Bug: group privileges returned 400 error ( [Fixes #14] )
+
+### Added:
   - Implemented HttpClient which abstracts HTTP layer from base clases and allows custom HTTP libraries to be used.
   - Implemented simple EventListener which can be used to change request before and after its executed.
+
+### Changed:
   - Updated `Api::setCredentials()` to use our new EventListener.
 
 [Fixes #14]: https://bitbucket.org/gentlero/bitbucket-api/issue/14
 
 ## 0.1.2 / 2013-12-24
 
+### Fixed:
   - Bug: Duplicate array keys in groups filters. ( [Fixes #12] )
 
 [Fixes #12]: https://bitbucket.org/gentlero/bitbucket-api/issue/12
 
 
 ## 0.1.1 / 2013-11-26
 
+### Removed:
   - Removed `newuser` endpoint. ( [Fixes #10] )
   - Removed `repositories/changesets/likes` endpoint. ( [ref #1] )
+
+### Changed:
   - Code clean, fixed typos.
 
 [Fixes #10]: https://bitbucket.org/gentlero/bitbucket-api/issue/10