Add CHANGELOG

Author: ashur

CHANGELOG.md

@@ -0,0 +1,18 @@
+# Changelog
+
+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).
+
+## [Unreleased]
+
+## [0.2.0] - 2023-05-23
+
+### Added
+
+- Register `classnames` as a filter
+
+## [0.1.0] - 2023-02-28
+
+Initial release