release-process.rst

1. Ensure tickets assigned to Milestones are up to date
2. Update CHANGELOG.md
3. Increment version number in rope/__init__.py
4. Tag the release with the tag annotation containing the release information, e.g. git tag -s 0.21.0
5. python3 -m build
6. twine upload -s dist/rope-$VERSION.{tar.gz,whl}
7. Publish to Discussions Announcement