change log for 3.3.0 (#622)

Co-authored-by: Dan Carbonell <[email protected]>

Author: DanC5

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## [3.3.0](https://github.com/GetStream/stream-chat-react/releases/tag/v3.3.0) 2020-12-3
+
+## Feature
+
+- Allow all instances of Avatar to be overridden with a custom component via props [#610](https://github.com/GetStream/stream-chat-react/pull/610)
+
 ## [3.2.4](https://github.com/GetStream/stream-chat-react/releases/tag/v3.2.4) 2020-11-19
 
 ## Fix