Use X-Plane SDK 2.13.
Label objects with source line number and status.
Lose ICAO header statement. Calculate activation distance and centre from route bounding boxes.
Fix handling of missing and bad objects - terminate all loading activities.
Defer deleting draw callback and window to next flighcallback.
Fix for object LOD calculation.
Pre-compute debug labels and cull them.
Don't draw boxes for waypoint debug labels.
Warn on duplicate waypoints.
Take into account waiting object at previous node when sharing paths.
Impose arbitrary limit on size of routes' bounding box.
Fix for skipping redundant ICAO statement.
Docs: Clarified the effect of "number of cars" setting.
Release 1.50.