Added notes feature to controller

USer can device.notes = 'Add the note they want'
and retrive the history of their work
device.notes

Signed-off-by: Christian Tremblay <christian.tremblay@servisys.com>

BAC0/core/devices/Device.py

@@ -61,6 +61,11 @@ def __init__(self, address, device_id, network, *, poll=10):
 
         self._notes = namedtuple('_notes',
                                    ['timestamp', 'notes'])
+
+        self._notes.timestamp = []
+        self._notes.notes = []
+        self._notes.notes.append("Controller initialized")
+        self._notes.timestamp.append(datetime.now())
 
     @property
     def notes(self):