Pass params also when subscribe (#223)

* Pass params also when subscribe

* Add fragment.

Author: Christian Barra

CHANGES/223.feature

@@ -0,0 +1 @@
+Pass params to docker events.

aiodocker/events.py

@@ -20,15 +20,15 @@ def listen(self):
                       DeprecationWarning, stacklevel=2)
         return self.channel.subscribe()
 
-    def subscribe(self, *, create_task=True):
+    def subscribe(self, *, create_task=True, **params):
         """Subscribes to the Docker events channel. Use the keyword argument
         create_task=False to prevent automatically spawning the background
         tasks that listen to the events.
 
         This function returns a ChannelSubscriber object.
         """
         if create_task and not self.task:
-            self.task = asyncio.ensure_future(self.run())
+            self.task = asyncio.ensure_future(self.run(**params))
         return self.channel.subscribe()
 
     def _transform_event(self, data):