talkatu/talkatu

Merge the GTK4 branch as it is now usable

21 months ago, Gary Kramlich
033dcb62164a
Merge the GTK4 branch as it is now usable
Talkatu is versioned in [mercurial](https://www.mercurial-scm.org/) and is
available on [keep.imfreedom.org](https://keep.imfreedom.org/talkatu/talkatu).
All contributions are provided via review requests at [reviews.imfreedom.org](https://reviews.imfreedom.org/).