Tahoma seems to not send all possible keys, depending on the devices …

…states, we should add the unknown key instead of raising an error.

custom_components/tahoma/tahoma_api.py

@@ -650,7 +650,7 @@ def active_states(self):
     def set_active_state(self, name, value):
         """Set active state."""
         if name not in self.__active_states.keys():
-            raise ValueError("Can not set unknown state '" + name + "'")
+            self.__active_states[name] = value
 
         if (isinstance(self.__active_states[name], int) and
                 isinstance(value, str)):