Changelog badge in README

README.md

@@ -2,6 +2,7 @@
 
 Keep a local seismic catalog.
 
+[![changelog-badge]][changelog-link]
 [![PyPI-badge]][PyPI-link]
 [![license-badge]][license-link]
 [![docs-badge]][docs-link]
@@ -162,6 +163,8 @@ I'm very open to contributions: if you have new ideas, please open an
 Don't hesitate sending me pull requests with new features and/or bugfixes!
 
 <!-- Badges and project links -->
+[changelog-badge]: https://img.shields.io/badge/Changelog-136CB6.svg
+[changelog-link]: https://github.com/SeismicSource/seiscat/blob/main/CHANGELOG.md
 [PyPI-badge]: http://img.shields.io/pypi/v/seiscat.svg
 [PyPI-link]: https://pypi.python.org/pypi/seiscat
 [license-badge]: https://img.shields.io/badge/license-GPLv3-green