-Want tests for
-
- - start repo with old tag, push with new tag, run
- "old" dgit to push again with new tag, push again with
- old tag
-
- - rejecting push of same version with one tag when then the other
-
-
- * Provide --gpbpq[=:] options
-
- * Document --quilt=unapplied|gbp|dpm
-
- * Mention new tag format in debian/changelog