heck! yeas! I just cracked a major nut that has been a block for not only #KiConnect but nearly all #FreeCAD addons I've attempted.
Finally got a `Part::FeaturePython` to act like an `App::Part`. ie; something that can hold other bodies and move them around, maintaining there relative positions. And! it happens real-time, not 'finish the move' then everything realigns, which is the best I've achieved so far.


