circuits.core: Refactor __add__, __iadd__, __sub__ and __isub__ to return self in all cases and use 'is not' vs. 'not ==' in comparisions of x and y. Return self in calls to register(y) and unregister() -- Removed __lshift__ and __rshift__ (both unused)
circuits.core: Refactor __add__, __iadd__, __sub__ and __isub__ to return self in all cases and use 'is not' vs. 'not ==' in comparisions of x and y. Return self in calls to register(y) and unregister() -- Removed __lshift__ and __rshift__ (both unused)

treemo/circuits,eriol/circuits,eriol/circuits,treemo/circuits,eriol/circuits,nizox/circuits,treemo/circuits