add back deleted version tags

Author: JaerongA

CHANGELOG.md

@@ -74,6 +74,8 @@ Observes [Semantic Versioning](https://semver.org/spec/v2.0.0.html) standard and
 
 
 [0.2.2]: https://github.com/datajoint/element-array-ephys/releases/tag/0.2.2
+[0.2.1]: https://github.com/datajoint/element-array-ephys/releases/tag/0.2.1
+[0.2.0]: https://github.com/datajoint/element-array-ephys/releases/tag/0.2.0
 [0.1.4]: https://github.com/datajoint/element-array-ephys/releases/tag/0.1.4
 [0.1.3]: https://github.com/datajoint/element-array-ephys/releases/tag/0.1.3
 [0.1.2]: https://github.com/datajoint/element-array-ephys/releases/tag/0.1.2