Update changelog

Author: Riimu

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [0.2.2] - 2018-10-17
 ### Changed
 - Now depends on version `^0.3.0` of the `simply/container` library
 
@@ -30,6 +32,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Added
 - Initial development release
 
-[Unreleased]: https://github.com/simply-framework/application/compare/v0.2.1...HEAD
+[Unreleased]: https://github.com/simply-framework/application/compare/v0.2.2...HEAD
+[0.2.2]: https://github.com/simply-framework/application/compare/v0.2.1...v0.2.2
 [0.2.1]: https://github.com/simply-framework/application/compare/v0.2.0...v0.2.1
 [0.2.0]: https://github.com/simply-framework/application/compare/v0.1.0...v0.2.0