[CREATE] 1.2.0-beta.0 released

[Andrew Chadwick]

The first proper beta testing release for 1.2.0 is ready for brave
souls to try out. I really hope you all like what you see!

You can download it from
https://github.com/mypaint/mypaint/releases/tag/v1.2.0-beta.0

We have Windows and Ubuntu binaries available, all signed, plus a
signed canonical source tarball. Apologies for the size of the Windows
installers - we need to package all of GTK/GDK and Python on that
platform too.

(Don't forget: if you find the translations lacking for your
languages, you can help fix mistakes before the next beta over at
https://hosted.weblate.org/engage/mypaint/. Your friendly maintainer
here is sadly a near-total monoglot, but we have tools. And a crowd to
source from.)

-- 
Andrew Chadwick