I was looking through the channel code and noticed that the fired state is never assigned to false. This makes sense for channels like onDeviceReady, when you'd want this to stay active. But...
It's a bit strange for things like onPause and onResume. It means that if the app has ever been paused or resumed, then every new listener going forward is going to fire upon subscription even though the current state is not paused/resumed. I tested this out locally, and it appears to be true. So... How about we add a method called "fireOnce", which calls fire() and then sets fired = false so that new subscribers will not be immediately triggered.
