Finalize CHANGELOG.md for 0.13.0

Author: matkoch

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).
 
 ## [vNext]
+
+## [0.13.0] / 2018-12-10
 - Change verification of PATH environment variable to be executed only with `Trace` log level
 - Added `ToolSettings.When` for conditional fluent modifications
 - Added `.editorconfig` file in setup to avoid formatting issues
@@ -224,7 +226,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Added CLT tasks for Git
 - Fixed background color in console output
 
-[vNext]: https://github.com/nuke-build/nuke/compare/0.12.4...HEAD
+[vNext]: https://github.com/nuke-build/nuke/compare/0.13.0...HEAD
+[0.13.0]: https://github.com/nuke-build/nuke/compare/0.12.4...0.13.0
 [0.12.4]: https://github.com/nuke-build/nuke/compare/0.12.3...0.12.4
 [0.12.3]: https://github.com/nuke-build/nuke/compare/0.12.2...0.12.3
 [0.12.2]: https://github.com/nuke-build/nuke/compare/0.12.1...0.12.2