Release checklist

Pre-check:

• There are no pending issues in the Roadmap for this release (if there are, move them away or close them)
• The repo is on the correct HEAD (dev or N.M.x)
• CI:
• Rebuild (from scratch) all targets with GCC and check autotests+quotest

Actions:

• Make a branch for the release, and check/update:
  • README.md
  • CONTRIBUTING.md
  • SECURITY.md
  • the version number in CMakeLists.txt
• Go to the Releases page and make a draft for release notes:
  • Fill in the tag (should be "N.M.L", not "N.M")
  • Thank all contributors whose commits landed in this release
  • Describe all notable fixes/enhancements/API breakage
• git commit && git push, if not yet
  • After an hour, check CI for the release branch; if it failed, investigate and decide on a further action
  • Open a PR, with "Closes" on the issue with the checklist
  • After another hour :-\ check CI on the PR
  • Merge the branch
• Publish release notes at GitHub (the title should be "###", not "Version ###")
• Update the topic in #quotient
• Post a TWIM update

Post-check:

• Open the release page in Incognito/Privacy mode; check the version and the Git tag