spine/spine — pull request #447 by yaakaito (2013-04-05 15:15:41+00:00)
Title: When listenToOnce, Event can stopToListening 

Hi,

I think that `stopToListening` can stop event that was bound by `listenToOnce`.
And on current, `stopListening` throws exception: `indexOf is not defined` if `ListeningTo` is empty. Fixed it.