📝 Update release notes

Author: github-actions

docs/release-notes.md

@@ -4,6 +4,7 @@
 
 ### Features
 
+* ✨ Export (import and re-export) `TaskGroup` from `asyncer`. PR [#87](https://github.com/tiangolo/asyncer/pull/87) by [@MarkParker5](https://github.com/MarkParker5).
 * ✨ Add support for AnyIO 4.x, drop support for Python 3.7. PR [#90](https://github.com/tiangolo/asyncer/pull/90) by [@khiemdoan](https://github.com/khiemdoan).
 
 ### Refactors