Getting Things GNOME!

If you would like to help test and fix our upcoming #GTK4 version of #GTG, check out this branch, using the latest versions of GTK (ex: 4.10.3+): https://github.com/getting-things-gnome/gtg/pull/894

We'd welcome extra eyes to find any remaining issues with that code (file them in https://github.com/diegogangl/gtg/issues), and merge requests to Diego's repository (at https://github.com/diegogangl/gtg/pulls) to get it to the finish line would help a lot!