Release steps

intltool-update --maintain to see what is missing in POTFILES.in
xgettext ... to generate hamster.pot
make a tarball and send to the translation team
Check for pending PRs
Check issues, update milestones if needed
update NEWS
update version number manually (bumpversion is a time drain) https://semver.org/
git commit -m "update version to "
git push upstream HEAD:master
Prepare a draft release.
Update the contributors link
Update NEWS link
Update diff links
publish release (that creates the tag)
update diff link with new tag

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