Implemented __eq__, __hash__ and __repr__ on OscMessage.
Implemented __eq__, __hash__ and __repr__ on OscMessage.

andrewyoung1991/supriya,Pulgama/supriya,josiah-wolf-oberholtzer/supriya,Pulgama/supriya,Pulgama/supriya,Pulgama/supriya,andrewyoung1991/supriya,andrewyoung1991/supriya