title: UNLocationNotificationTrigger only during specific time range
body: <p>Currently when my iOS app is in suspended state, when I cross a geofencing area I am getting proper trigger from UNLocationNotificationTrigger. However I need to to show the notification only few hours before a booking time. There is no guarantee user will open the app after doing a booking</p>
  <p>For eg., say my booking time is 4pm then I want geo notifications to be triggered only if user crosses the geo area between 3 pm to 4 pm and not before 3 pm.</p>