Merge in all the changes, make sure master is happy and the current working directory clean.
Bump the version in cron-sentry/version.py following semver. Let's call it $NEW_VERSION.
Update the CHANGELOG.md file with the new features and bugfixes and add a header with the $NEW_VERSION. Avoid small changes that are irrelevant to end users.
Then make a commit called "Release $NEW_VERSION" and git tag v$NEW_VERSION
Run git push && git push --tags
run make release