fixed: The copy constructor of MutableConstant took MutableConstant<>& as an argument which was by default a float. This lead to a type conflict.
fixed: The copy constructor of MutableConstant took MutableConstant<>& as
an argument which was by default a float. This lead to a type conflict.

tkemmer/ball,tkemmer/ball,tkemmer/ball,tkemmer/ball,tkemmer/ball,tkemmer/ball