Changelog for v0.5.1.

Author: tomzx

CHANGELOG.md

@@ -4,6 +4,12 @@ This project follows [Semantic Versioning 2.0.0](http://semver.org/).
 
 ## <a name="unreleased"></a>Unreleased
 
+## <a name="v0.5.1"></a>v0.5.0 (2016-01-23)
+[Full Changelog](https://github.com/tomzx/php-semver-checker-git/compare/v0.5.0...v0.5.1)
+### Changed
+* Update `php-semver-checker` to v0.8.1
+* Pass an `InspectableArgvInput` object when calling `Application::run()`
+
 ## <a name="v0.5.0"></a>v0.5.0 (2016-01-23)
 [Full Changelog](https://github.com/tomzx/php-semver-checker-git/compare/v0.4.2...v0.5.0)
 ### Added