Fix RuntimeError about Future being attached to different loop

This fixes an error about

    RuntimeError: Task <Task pending name='Task-8' coro=<Event.wait() running at /usr/lib64/python3.8/asyncio/locks.py:309> cb=[_release_waiter(<Future pendi...8094c9070>()]>)() at /usr/lib64/python3.8/asyncio/tasks.py:429]> got Future <Future pending> attached to a different loop

in await asyncio.wait_for(self._notifyevent.wait(), timeout)
at bleakconnection.py, line 101

Author: tvogel

eq3bt/bleakconnection.py

@@ -31,14 +31,14 @@ def __init__(self, mac, iface):
         self._mac = mac
         self._iface = iface
         self._callbacks = {}
-        self._notifyevent = asyncio.Event()
-        self._notification_handle = None
 
         try:
             self._loop = asyncio.get_running_loop()
         except RuntimeError:
             self._loop = asyncio.new_event_loop()
             asyncio.set_event_loop(self._loop)
+        self._notifyevent = asyncio.Event(loop=self._loop)
+        self._notification_handle = None
 
     def __enter__(self):
         """