Update changelog

CHANGELOG.md

@@ -8,6 +8,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Added
 
+- Yarn action handling now supports a wider range of return values.
+- `YarnImporter.GetHashString()` is now public.
+- `UnityLocalisedLineProvider` no longer throws an exception if an asset table is provided but does not contain an asset for a line.
+- `DialogueRunner.CommandDispatcher` is now set up on first access, rather than in `Awake`.
+  - This allows other objects to work with the command dispatcher (for example, registering new methods) in their `Awake` methods, even if their `Awake` methods run before `DialogueRunner`'s.
+
 ### Changed
 
 ### Removed