When you have a pristine-tar branch please keep that updated. I advise you to drop that branch. Else, please recreate it with 0.5.0 only.
The d/copyright shortnames should shorten .0 license version endings. So GPL-3.0+ should be GPL-3+. Also licensed under GPL-3+ are the following files: configure.ac The Makefile.am files that are not already in d/copyright Please really check every file.
