fixed the bugs in WindChecker
Added deltas, included thresholds in the comparison, reversed the t1 counter.
Rename No to NotWindy In going up from NotWindy --> CheckPersistance --> Windy include threashold: wind_speed >= WIND_SPEED_THREASHOLD In going down to NotWindy from Windy, use wind_speed < WIND_SPEED_THREASHOLD - DELTA In going down to NotWindy from CheckPersistance, use wind_speed < WIND_SPEED_THREASHOLD In going down to NotWindy from CheckPersistance, use ck >= t1
Fixes #6 (closed)