Made the data attribute of Event optional

homeassistant/util.py

@@ -1,7 +0,0 @@
-def ensure_list(parameter):
-	return parameter if isinstance(parameter, list) else [parameter]
-
-def matcher(subject, pattern):
-    """ Returns True if subject matches the pattern.
-        Pattern is either a list of allowed subjects or a '*'. """
-    return '*' in pattern or subject in pattern