update collection before emitting message

This reverses a long-standing sequence of events in the DDP client as
noted here:
#22 (comment)
9175

However, message filters were removed by
78b44d1f90475c1875b0
ab3aab009956c9efe2a4 so keeping the emit -> update behavior doesn’t
make any sense.

Author: emgee3

lib/ddp-client.js

@@ -71,9 +71,8 @@ DDPClient.prototype._prepareHandlers = function() {
   });
 
   self.socket.on('message', function(event) {
-    self.emit('message', event.data);
-
     self._message(event.data);
+    self.emit('message', event.data);
   });
 };