Add Component copy behaviour

Implement explicit copy behaviour

>>> c1 = Cube(size=10)
>>> c2 = c1.copy()
>>> from copy import copy
>>> c3 = copy(c1)

Both methods create objects independent of the original; changes to c1 do not effect its copies.

Assembly component copies would be nested.

Question Is there a way to intelligently copy a Component before its been built, so that the original, and the copy are only built once… Initial implementation, probably avoid the tricks; keep it simple stupid (KISS principal)

[fragmuffin]

@gntech yep!, that’s a good argument! I love it 😉

[gntech]

And my opinion is that there should be no different behaviour for Parts vs Assembly.

• A shallow copy for an assembly will recursively perform shallow copy on the included parts.
• A deepcopy of an assembly will recursively perform deepcopy of the included parts.