change in measures modules

Author: gabrielaznar

climada/entity/entity_def.py

@@ -8,7 +8,7 @@
 
 from climada.entity.impact_funcs.impact_func_set  import ImpactFuncSet
 from climada.entity.disc_rates.base import DiscRates
-from climada.entity.measures.base import MeasureSet
+from climada.entity.measures.measure_set import MeasureSet
 from climada.entity.exposures.base import Exposures
 from climada.util.config import CONFIG