debian/: modernize packaging & make it build also on Debain testing (!24) · Merge requests · UBports / Development / Core / lomiri-thumbnailer

debian/: upgrade to debhelper-compat 13
debian/: adapt packaging from Debian unstable as appropriate
debian/control: add Conflicts, Replaces, Provides on the old pkg name
debian/control: update description of compat pkg
debian/: update packaging to also build on Debian testing by making dh_migrations optional
Adjust ignore_pat in copyright_check.sh

debian/: modernize packaging & make it build also on Debain testing