Start a CHANGELOG
We've only had a single release so far so it wasn't very relevant but moving forwards we should track added features to put in release notes.
I'm not experienced enough with automatic changelog generation so for now maybe a CHANGELOG.md
would be enough.
Additionally we could have a lint
CI job that forces updates to the CHANGELOG.md for MRs that are tagged as feature
or bugfix
(TODO: add a bugfix
label)