Muh Witchery indeed. Just a couple of days ago I expressed my worries for that mod since it's tied with TC as #1 for me.
I am hopeful that it will get there, one way or another haha. I have seen unofficial ports of mods before (If I'm not mistaken, Ars Magica 2 1.10 is unofficial). It's questionable but fills the gap while the author makes a call on how to proceed.