Multithreading in Python doesn't work (GIL)
This issue was reported in #254 (closed). @proyan fixed an issue in the implementation of the StateMultibody
class. It used to contain internal data that was producing errors in a multi-threads setup. This issue is solved here: !248 (merged).
However, we still have problems when we run multi-threads in Python interpreter, i.e. GIL (https://gepgitlab.laas.fr/loco-3d/crocoddyl/issues/256#note_6760).
I created another issue to decoupled both problems from #254 (closed).