Update CHANGELOG.md

Author: gkjohnson

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [0.9.1] - 2025.06-20
+### Fixed
+- Typing
+
 ## [0.9.0] - 2025-01-21
 ### Changed
 - Changed "bvhClosestPointToPoint" function signature to include "maxDistance" argument.