v0.2.0 Release - Prefer upstream tagged release version over master (HEAD), and download upstream release tarball if available, just like what uscan would do with our default debian/watch. - Add -force-prerelease flag to revert to old behaviour of always choosing @master (git HEAD) over @latest tagged version. - Generate debian/watch to track git HEAD if upstream has never tagged any release. - Fix missing long description for non-GitHub import path when "go-source" meta tag actually resolves to GitHub. - Add gitlab.com hoster as "gitlab", and blitiri.com.ar hoster as "blitiri".