Merge patch from NMU.
Updated debian/control with VCS headers.
Merge remote-tracking branch 'origin/debian' into debian
Update changelog for VCS URL addition.
hax
Merge branch 'master' into debian

Conflicts:
	debian/changelog
Update changelog for VCS urls.
Merge tag 'version/0.13' into debian

Version 0.13.
Bump version.
Update watch file to match new github upstream.
Bump standards version.
Unapply patches after build.
Update Makefile to allow passing in external make variables.