initial handling of BMBT and MFL buttons
-use .listen() method for BT and IBus SoftwareSerial
-Turn bluetooth on/off via PWREN pin with ignition (IBus only, MBus is always-on)
-Bluetooth disconnect after ignition off
-Bluetooth reconnect after ignition on
-IBus BMBT & MFL next/prev button support
moved state query from loop() to methd _bt_queryState call from within loop
less logging
Added onPause/onResume Console commands
Turn on Bluetooth on power-up
changed ignition/key detection for IBus