output a data point on every state transition for better analysis
Set digitalpin actuator to inactive on init
typecast spaces to print to int_8, strlen > 5 would cause a bug with the old implementation
pidMax was printed as temperature instead of temperature difference
Only set beer temp to --.- in fridge constant mode, not in OFF mode.
Merge branch 'develop' of https://github.com/BrewPi/brewpi-avr into develop

Conflicts:
	brewpi_avr/Actuator.h - code moved to ActuatorArduinoPin.h
	brewpi_avr/TempControl.cpp - conflict over INT_MIN vs MIN_TEMP