New upstream release.

Main updates:

Configuration for making ostrees can be simplified by not having to repeat for each architecture.

Arbitrary commands can run after cloning data from Git. This will make it possible to merge comps translations during compose time. Copying files from SCM is now also properly documented.

Comps packages that are not found are now logged. This is not a bulletproof solution as some of these are expected to be missing.

Allow aborting compose when repoclosure fails. We can now also turn this repoclosure off.

Debugsource packages are now handled similarly to debuginfo packages.

A warning is issued when parts of configuration are not used due to a variant or an architecture being excluded.

DNF gathering backend is fixed to correctly exclude fulltree packages. It can also be used to download packages for initial package set.