It became clear we need a RC3, mainly for 3 reasons (ordered with first
ones being more serious issues) for which I think more testing would be
better:
1. The changes in the image graph, regarding filters (#12614), and
possibly more than I am thinking of doing before RC3.
2. The change in multi-threading code for paint (#11389). I want to be
sure not to create new crashes (multi-threading is always full of
surprises!).
3. The change to a central plug-in API implementation (!2058) and I want
to make sure it doesn't bite us back with more testing (though it is
only for persistent plug-ins so it is fortunately not touching every
plug-in).
It was changed to "GIMP-continuous-ARCH.AppImage" because
I had hope of linking GitLab artifacts on gimp-web (which failed)
so let's use "GIMP-GIMP_VERSION-ARCH.AppImage" again.
Also, uppercase AppId 'Continuous' suffix to be consistent with Flatpak.
As a particularity in these NEWS, the changes for BMP are more accurate
in the NEWS file than in the commit because MR !1932 got mistakenly
squashed. For anyone looking to have even more details, they should read
the informative comments in the MR:
https://gitlab.gnome.org/GNOME/gimp/-/merge_requests/1932/commits
Ported from ca5688bf6d
Just to note, we are already not using Assembly code
in 10bit and 12bit libraries. So, no feature dropped.
---
Also, little fixes to some dev docs regarding Clang.
