This is a simple script that I use to create GitHub releases.
It pairs well with this action.
It starts with a RELEASE_NOTES file, in which I write notes for a pending
release in Markdown format. When I'm ready to create a release, I run
release.sh tag-name, which uses RELEASE_NOTES for the tag message. To
support Markdown, it uses --cleanup=verbatim to use the exact text in
RELEASE_NOTES as the commit message, including lines that start with
#.
When creating pre-releases, you can set RELEASESH_PRERELEASE to 1.
If you're not creating a pre-release, then the script will clear the contents
of RELEASE_NOTES and commit newly empty version.