Move ioloop init to module level

src/event_handlers/messaging.py

@@ -6,10 +6,11 @@ from zmq.eventloop.zmqstream import ZMQStream
 
 from config import PUBLISHER_PORT, RECEIVER_PORT
 
+ioloop.install()
+
 
 class Messaging:
     def __init__(self):
-        ioloop.install()
         self._zmq_context = zmq.Context.instance()
         self._zmq_sub_socket = self._zmq_context.socket(zmq.SUB)
         self._zmq_sub_socket.connect('tcp://localhost:{}'.format(PUBLISHER_PORT))