Update CHANGELOG.md

CHANGELOG.md

@@ -4,7 +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).
 
-## Unreleased
+## [0.2.9] - 2021-03-03
+### Added
+- `onLoadTileSet` to the typescript definitions file.
+
 ### Fixed
 - Feature table attributes like `RTC_CENTER` not being correctly applied to loaded tile geometry.