How about that?
In tree since 2018.
Please wait 2 weeks (14 days) before pinging on non-critical issues.
It's on my list, but I'll be able to look only on this or next weekend.
I don't keep a list on maintainer pinging preferences.
Two weeks was a general policy as far as I remember.
That's maintainer timeout, not ping timeout.
It seems to be not ready for stabilization: open bugs and problems with gtk3+ addressed upstream. I will update git snapshot in a while and fix issues if any will be left after an update.