Update changelog version

CHANGELOG.md

@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+
+
+## [v0.4.0]
 ### Changed
 - ([#50](https://github.com/danstis/Plex-Sync/issues/50)) Refresh shows when reloading the WebUI homepage.
 - ([#55](https://github.com/danstis/Plex-Sync/issues/55)) Ignore pre-release tags on header of web interface.
@@ -52,7 +55,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - App would attempt to sync even if a token was not obtained.
 - Spaces in TV Show names cause errors.
 
-[unreleased]: https://github.com/danstis/Plex-Sync/compare/v0.3.4...HEAD
+[unreleased]: https://github.com/danstis/Plex-Sync/compare/v0.4.0...HEAD
+[v0.4.0]: https://github.com/danstis/Plex-Sync/compare/v0.3.4...v0.4.0
 [v0.3.4]: https://github.com/danstis/Plex-Sync/compare/v0.3.1...v0.3.4
 [v0.3.1]: https://github.com/danstis/Plex-Sync/compare/v0.3.0...v0.3.1
 [v0.3.0]: https://github.com/danstis/Plex-Sync/compare/v0.2.0...v0.3.0