Allura/SourceForge to Gitlab migration

[Federico Bruni]

Hi

I don't want to revamp this old discussion:
http://lists.gnu.org/archive/html/lilypond-devel/2013-10/msg00095.html
http://lists.gnu.org/archive/html/lilypond-devel/2013-10/msg00140.html

This is just a call for all contributors who are not quite satisfied 
with current setup and think that moving to Gitlab "one day™" might 
be an improvement.
Current obstacle is that there's no way to import Allura/SourceForge 
issues into Gitlab. This is the issue to follow:
https://gitlab.com/gitlab-org/gitlab-ce/issues/45007

If you have a Gitlab account, click on the thumb up icon, as popular 
issues should have higher chances to be tackled sooner than later.

BTW, both Debian and GNOME projects moved to Gitlab in the last months:
https://salsa.debian.org/public
https://gitlab.gnome.org/GNOME

In 2013 Janek set up a LilyPond group/organization on gitlab.com:
https://gitlab.com/groups/lilypond

Best
Federico