Problem: release process is not automated

[sevein]

This could potentially be done from a new GitHub workflow or from a new job in tests that performs the release tasks given a certain condition, e.g. when the tag has been made available. An option is to write a new workflow that is triggered by a known event, e.g. release, tag, ...

Things that I would like to see:

• Semver in SCM (see setuptools_scm)
• Publishing of Docker images (semver + latest)
• Publishing of PyPI package
• Notification in Slack

Manual process:

• Update changelog
• Bump version in a3m/__init__.py
• Commit and push changes done in previous steps
• Confirm that HEAD builds successfully in GitHub
• Submit tag with
  • git tag -a "v0.4.0" -m "a3m v0.4.0", and
  • git push origin refs/tags/v0.4.0
• Publish package with make publish
• Publish Docker image with
  • docker build . -t ghcr.io/artefactual-labs/a3m:v0.4.0, and
  • docker push ghcr.io/artefactual-labs/a3m:v0.4.0