To make a release...

1. Make changes
2. Commit and push changes
3. git tag -a 7.4.28 -m "Release 7.4.28"
4. git push origin 7.4.28
5. set GH_TOKEN environment variable
6. 7z a bufexplorer-7.4.28.zip plugin\bufexplorer.vim doc\bufexplorer.txt
7. gh release create 7.4.28 --notes-from-tag bufexplorer-7.4.28.zip

If something happens and the tag is messed up, you will need to delete the
local and remote tag and release again.  To delete the tag:

1. git tag -d 7.4.27
2. git push --delete origin 7.4.27
3. Remove the release.