Reserved: Scene Control vs Dimming functionality: TODO
The experimental driver w/ support for Zigbee Groups (on/off and dimming) code is here :
https://raw.githubusercontent.com/kkossev/Hubitat/development/Drivers/Zigbee%20Button%20Dimmer/Zigbee_Button_Dimmer_lib_included.groovy
Update: driver name changed to "Zigbee Button Dimmer".
