Initial working button support! Removed `update` listener on some Characteristics.
Initial working button support! Removed `update` listener on some Characteristics.

StatefulProgrammableButton support not implemented yet!

Removed `update` event listeners from `On` and `OutletInUse`. Since
these Characteristics can be based on vdevs that regularly update data
without changing the value (e.g. Watt meter reading updates that don’t
change `OutletInUse` value…so we don’t need these flipping on and off
all the time. Make this opt-in in the future for these and possibly
other Characteristics.

SphtKr/homebridge-zway