Add m.room.avatar to default power levels. Change default required power levels of such events to 50

synapse/api/constants.py

@@ -77,6 +77,7 @@ class EventTypes(object):
 
     RoomHistoryVisibility = "m.room.history_visibility"
     CanonicalAlias = "m.room.canonical_alias"
+    RoomAvatar = "m.room.avatar"
 
     # These are used for validation
     Message = "m.room.message"

synapse/handlers/room.py

@@ -247,10 +247,11 @@ class RoomCreationHandler(BaseHandler):
                 },
                 "users_default": 0,
                 "events": {
-                    EventTypes.Name: 100,
+                    EventTypes.Name: 50,
                     EventTypes.PowerLevels: 100,
                     EventTypes.RoomHistoryVisibility: 100,
-                    EventTypes.CanonicalAlias: 100,
+                    EventTypes.CanonicalAlias: 50,
+                    EventTypes.RoomAvatar: 50,
                 },
                 "events_default": 0,
                 "state_default": 50,