* [ISSUE #19981] testing version bump
* [ISSUE #19981] debugging part-to-bump
* [ISSUE #19981] further debugging on part-to-bump
* [ISSUE #19981] further debugging on part-to-bump yet again
* [ISSUE #19981] further debugging on part-to-bump yet again and again
* [ISSUE #19981] improving on first successful attempt
* [ISSUE #19981] adding changelog and concurrency
* [ISSUE #19981] update version in .bumpversion.cfg
* [ISSUE #19981] testing Slack notification with working channel
* [ISSUE #19981] documentation and clean up before PR
* [ISSUE #19981] make changelog-message optional
* [ISSUE #19981] align version with new release
* [ISSUE #19981] code review