V3.0 + V3.1 compability (#44)

* Update away.py

* Update dungeon.py

* V3.0 + V3.1 compability

* V3.0 + V3.1 compability

* V3.0 + V3.1 compability

* V3.0 + V3.1 compability

* V3.0 + V3.1 compability

* V3.0 + V3.1 compability

antiphoneclapper/antiphoneclapper.py

@@ -7,6 +7,12 @@ from redbot.core import commands, checks, Config
 
 BaseCog = getattr(commands, "Cog", object)
 
+listener = getattr(commands.Cog, "listener", None)  # Trusty + Sinbad
+if listener is None:
+
+    def listener(name=None):
+        return lambda x: x
+
 
 class AntiPhoneClapper(BaseCog):
     """This cog deletes bad GIFs that will crash phone clients."""
@@ -67,6 +73,7 @@ class AntiPhoneClapper(BaseCog):
             tile_sizes.append(im.tile[0][1][2:])
         return any([x[0] > limit[0] or x[1] > limit[1] for x in tile_sizes])
 
+    @listener()
     async def on_message(self, m):
         if not m.attachments:
             return