add more information to the arrival waypoints

aman/types/ArrivalWaypoint.py

@@ -5,6 +5,9 @@ class ArrivalWaypoint():
         self.Waypoint = None
         self.FlightTime = None
         self.Trackmiles = None
+        self.IndicatedAirspeed = None
+        self.GroundSpeed = None
+        self.Altitude = None
         self.ETA = None
         self.PTA = None
 
@@ -19,6 +22,12 @@ class ArrivalWaypoint():
                 self.PTA = value
             elif 'trackmiles' == key.lower():
                 self.Trackmiles = value
+            elif 'altitude' == key.lower():
+                self.Altitude = value
+            elif 'groundspeed' == key.lower():
+                self.GroundSpeed = value
+            elif 'indicated' == key.lower():
+                self.IndicatedAirspeed = value
             else:
                 raise Exception('Invalid constructor argument: ' + key)