Upstream documentation is under GFDLv1.3+ with front-cover
and back-cover texts, which is considered nonfree by DFSG.
As such, we repack the upstream tarball to remove those files.
This is done using the 'Files-Excluded' stanza in debian/copyright.
Accordingly, we add the '+dfsg' suffix to the package version.

 -- Amin Bandali <bandali@gnu.org>, Sun,  8 Oct 2023 22:20:11 -0400
