Added ARANCINO_CORE_VERSION constant
- Added definition of a constant named
ARANCINO_CORE_VERSIONinArduino.h. This constant is read by Arancino Library which will send to Arancino Module this information during thebeginmethod.
ARANCINO_CORE_VERSION in Arduino.h. This constant is read by Arancino Library which will send to Arancino Module this information during the begin method.