Just what it says on the tin

Its in development. Both authors of RU and FS have other things going on right now but it is being worked on within RU, and the plan is to add compatibility. Not sure if dark is aware. but he may want to contribute or take over

I'm not sure if RU will release it as a separate or integrated feature IF they end up releasing it first. (NO ETA) But RU might not support older versions (under 1.20.X)