update changelog

Author: joshuadavidthomas

CHANGELOG.md

@@ -18,6 +18,10 @@ and this project attempts to adhere to [Semantic Versioning](https://semver.org/
 
 ## [Unreleased]
 
+### Changed
+
+- **Internal**: Moved task queueing functionality to `djls-server` crate, renamed from `Worker` to `Queue`, and simplified API.
+
 ## [5.2.0a0]
 
 ### Added
@@ -79,4 +83,4 @@ and this project attempts to adhere to [Semantic Versioning](https://semver.org/
 [5.1.0a1]: https://github.com/joshuadavidthomas/django-language-server/releases/tag/v5.1.0a1
 [5.1.0a2]: https://github.com/joshuadavidthomas/django-language-server/releases/tag/v5.1.0a2
 
-[5.2.0a0]: https://github.com/joshuadavidthomas/django-language-server/releases/tag/v5.2.0a0
+[5.2.0a0]: https://github.com/joshuadavidthomas/django-language-server/releases/tag/v5.2.0a0