Policy Function can mutate state that is passed to State Update Function

[Benjamin Scholtz]

Currently, a Policy Function can mutate the state that is then passed to a State Update Function. One possible solution: two state copies should be created and passed independently to the Policy and State Update Functions.

See

radCAD/radcad/core.py

Line 64 in a5fa0e6

 substate_copy = pickle.loads(pickle.dumps(substate, -1)) if deepcopy else substate.copy() 

[Benjamin Scholtz]

Closed by #54