Request: release commit message: diff Changes since the last tagged version instead of the last commit

[cxw42]

Currently, the commit message for a minil release is git diff Changes:

Minilla/lib/Minilla/Release/Commit.pm

Line 19 in 05255e6

$msg .= `git diff Changes`;

Would it be possible to diff against the last tagged version, if it exists? E.g., git diff <last tag> -- Changes.

I am using CI more often to test my dists before releasing. I make all my changes, commit, push, and wait for the CI results before running minil release. Therefore, the only diff in the Changes file is {{$NEXT}} and the date.

If the diff were against the last tag, then the commit message would be the changelog of the release. Then, when I made a GitHub release with the tarball, it would fill in the changelog automatically. This would save a step and result in more complete commit messages.

What do you think? Thank you for considering this request!