Stable SheepSheep Version Dev2

Running on SheepSheep as per 30.6.2017
-NOT 1.3board ready!
-driver protection still included
-Spiral mode: fixed STATE_ROLL outside beahviour
-BUMPER_STUCK behaviour improved
-selectable Debug port in mower.h
-highly EXPERIMENTAL tracking inside

Stable SheepSheep Version

Running on SheepSheep as per 15.06.2017