Update changelog for 0.2.1

Author: ocean90

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.1] - 2022-03-11
+
+### Fixed
+* Remove random output in `Taxonomy` class.
+
 ## [0.2.0] - 2022-03-11
 
 ### Changed
@@ -19,6 +24,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 * Initial version.
 
-[Unreleased]: https://github.com/wearerequired/common-php/compare/0.2.0...HEAD
+[Unreleased]: https://github.com/wearerequired/common-php/compare/0.2.1...HEAD
+[0.2.1]: https://github.com/wearerequired/common-php/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/wearerequired/common-php/compare/0.1.0...0.2.0
 [0.1.0]: https://github.com/wearerequired/common-php/compare/e3f7c76dd7579fec490b4fd0553629fc2159e4f2...0.1.0