CHANGELOG: added links

Author: eduard93

CHANGELOG.md

@@ -81,3 +81,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [0.1] - 2018-12-18
 ### Added
 - Initial version.
+
+[Unreleased]: https://github.com/intersystems-community/PythonGateway/compare/v0.7...HEAD
+[0.7]: https://github.com/intersystems-community/PythonGateway/compare/v0.6...v0.7
+[0.6]: https://github.com/intersystems-community/PythonGateway/compare/v0.5...v0.6
+[0.5]: https://github.com/intersystems-community/PythonGateway/compare/v0.4.2...v0.5
+[0.4.2]: https://github.com/intersystems-community/PythonGateway/compare/v0.4...v0.4.2
+[0.4]: https://github.com/intersystems-community/PythonGateway/compare/v0.3...v0.4
+[0.3]: https://github.com/intersystems-community/PythonGateway/compare/v0.2...v0.3
+[0.2]: https://github.com/intersystems-community/PythonGateway/compare/v0.1.1...v0.2
+[0.1.1]: https://github.com/intersystems-community/PythonGateway/compare/v0.1...v0.1.1
+[0.1]: https://github.com/intersystems-community/PythonGateway/compare/318afe8dba59d6892943512941f9063c91fececa...v0.1