Bump version of OpenTTD required
OrdersAI uses HasStationRating which is a 1.4 API.
Merge branch 'dev'
Fixed non-stop orders preventing Airplanes and Boats from getting orders OpenTTD would respond to
New stations check whether any vehicles are scheduled to visit after the current station or
  actively running to the station.  This should prevent multiple vehicles from visiting new
  stations
Merge branch 'dev'