chore: updates changelog, adding 0.2.0 release notes

Author: hartmut-co-uk

CHANGELOG.md

@@ -4,9 +4,29 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+---
+
+## Template [0.2.0] - 2023-02-12
+### Added
+- feat: implements `StateStore.query`
+- improved javadoc
+- adds documentation on
+  - store types + operations
+  - builder & options
+  - link to examples
+  - known limitations
+  - cassandra specifics
+
+### Fixed
+- for any bug fixes
+
+[0.2.0]: https://github.com/thriving-dev/kafka-streams-cassandra-state-store/compare/v0.1.0...v0.2.0
+[0.1.0]: https://github.com/thriving-dev/kafka-streams-cassandra-state-store/releases/tag/v0.1.0
+
 ## [0.1.0] - 2023-01-08
 First public release
 
+
 ---
 
 ## Template [x.y.z] - yyyy-mm-dd