Update CHANGELOG.md

Author: gkjohnson

CHANGELOG.md

@@ -4,8 +4,8 @@ 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
-### Fixed
+## [0.3.3] - 2021-09-08
+### Added
 - Support for embedded tileset / tile geometry URLs with hashes, search query parameters.
 
 ## [0.3.2] - 2021-09-02