Bug#889027: quodlibet: New upstream version (4.0.2) available (Python 3 support)

[W. Martin Borgert]

Hi,

if all quodlibet maintainers are OK with that, I would try to

 - move the package to PAPT and salsa,
 - apply my changes for 4.0.x,
 - and upload a new version

TIA & Cheers