v2 release (#84)

Author: f3ath

CHANGELOG.md

@@ -6,12 +6,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
-## [2.0.0-rc.1] - 2018-03-01
-### Changed
-- BC-breaking! Improved performance
+## [2.0.0] - 2018-02-26
+V2 initial release
 
-## [2.0.0-rc.0] - 2018-02-26
-V2 release candidate
-
-[Unreleased]: https://github.com/json-api-php/json-api/compare/2.0.0-rc.1...HEAD
-[2.0.0-rc.1]: https://github.com/json-api-php/json-api/compare/2.0.0-rc.0...2.0.0-rc.1
+[Unreleased]: https://github.com/json-api-php/json-api/compare/2.0.0...HEAD