* add support for FireBox_Mk1, reduce heartbeat, separate eStop time
* make match master
* make match master
* Update defines.h
* FIX: return WiThrottle speedstep, not DCC speedstep, in response to speed change request.
Should close#104
* use int, not byte for witSpeed
* add turnout, sensor and output states to 's'tatus message
In prep for Wifi siolution, all output functions changed to expect Print class instead of Stream... Can still pass Serial1 etc because Stream extends Print, but this allows for an output-only class extending Print to collect a response buffer for Wifi sending with AT commands.
