Rearrange and fix imports (broken through merge)Adjust some Types.Change LegoAssembly.clone() to use properties['label']

Fix Assembly property parameter options.

Main difference are:
- deepcopy vs dict.update
- optional arguments
- label as dict entry or direct attribute

Removed properties from constructor. Changed parameter order. Made name optional. Added functionalities to accept datasheet dict and additional properties in form of dict type arguments and key-value arguments