Update CHANGELOG.md

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).
 
+## [0.2.2] = 2020-12-23
+### Fixed
+- Incorrectly removing the implicit y-up to z-up GTLF transformation.
+
 ## [0.2.1] - 2020-12-15
 ### Added
 - Support for external tile sets.