Updated the changelog

Author: RoyTheunissen

CHANGELOG.MD

@@ -6,6 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 ## [2.3.9] - 19/02/2025
+## Changed
+ - Fixed generated static access code overwriting the collection definition
+ - Pre 2.3.0 collections will now be assumed to want a namespace setting that is the same namespace as its item type
+ - When generating static/indirect access code using the new `.g.cs` suffix, existing static/indirect access code that uses the old `.cs` suffix is now automatically removed to prevent compile errors
+
 ## Changed
  - Added some general fixes to validate Collection and Items have unique `LongGuid`
  - Fixed issues when after some operation with the context menu on the CollectionEditor items would not refresh properly