Based on the Github insights, publish frequency, continual "we have plans for that feature" commentary, over-articulated dev speak, and other data I was able to find online, I suspect that this mod has been abandoned.

No, everyone just has lives to live.
Be patient.

For the record. I'm not involved much in this mod's development anymore. But the team members are all alive and well (to my knowledge). Everyone is just busy in their own ways, whether it be with work, school, etc.

What triphora said is correct. C+ hasn't been abandoned, but most of the team is currently occupied with other things. The next update has been nearly ready for quite some time, but we have no ETA.