allow visibility on current button handling state (for power management) #73
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For my application (and some others?) I need to keep the CPU sleeping almost all of the time. Therefore polling on the current msec won't work while in that mode. This minor commit adds a bool so I can see if the button state machine is actively looking at a press sequence (in that case I don't suppress sleep).
If others want this you are welcome to it. Thanks for the nice lib. -kevin