Updated CHANGELOG.md for 1.20.19 release

Author: bUnitBot

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.20.20] - 2021-04-24
+
 asdfa sadf 
 asdf asdf asdf asdf asdf
 
@@ -91,7 +93,9 @@ more of that
 
 -   Something was added.
 
-[Unreleased]: https://github.com/bUnit-dev/workflows/compare/v1.20.16...HEAD
+[Unreleased]: https://github.com/bUnit-dev/workflows/compare/v1.20.20...HEAD
+
+[1.20.20]: https://github.com/bUnit-dev/workflows/compare/v1.20.16...v1.20.20
 
 [1.20.16]: https://github.com/bUnit-dev/workflows/compare/v1.20.13...v1.20.16