Release checklist

We use Github Changelog Generator, set it up with a Github API key in environment variable.

At release:

• Open a branch/PR
• Run github_changelog_generator --future-release x.x.x and clean autogenerated changelog (it contains duplications like mentioning both issue and PR fixing it)
• Update version in CMakeLists.txt
• add version to file other/appdata/io.github.antimicrox.antimicrox.appdata.xml.in (check for <releases>)
• Merge as chore(release): x.x.x
• Create tag & release
• Go to the Flathub repo and update tag & commit ID
• After release, update RPM/DEB packages etc.