Update CHANGELOG.md

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed
 - Improved type definitions.
 - `PNTSLoader.parse` now returns a promise.
+- All model loaders on inherit from a common type.
 
 ## [0.3.4] - 2021-11-15
 ### Added