update changelog for release v0.3.4-alpha [no ci]

CHANGELOG.md

@@ -4,6 +4,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
+
+## [0.3.4-alpha] - 2021-12-21
 ### Fixed
 - Fix other video and song scanners to include videos contained directly in top-level folders that are added to a library
 - Allow saving ffmpeg troubleshooting reports on Windows
@@ -865,7 +867,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Initial release to facilitate testing outside of Docker.
 
 
-[Unreleased]: https://github.com/jasongdove/ErsatzTV/compare/v0.3.3-alpha...HEAD
+[Unreleased]: https://github.com/jasongdove/ErsatzTV/compare/v0.3.4-alpha...HEAD
+[0.3.4-alpha]: https://github.com/jasongdove/ErsatzTV/compare/v0.3.3-alpha...v0.3.4-alpha
 [0.3.3-alpha]: https://github.com/jasongdove/ErsatzTV/compare/v0.3.2-alpha...v0.3.3-alpha
 [0.3.2-alpha]: https://github.com/jasongdove/ErsatzTV/compare/v0.3.1-alpha...v0.3.2-alpha
 [0.3.1-alpha]: https://github.com/jasongdove/ErsatzTV/compare/v0.3.0-alpha...v0.3.1-alpha