Some hot fixes
- Fixed Town growth function.
- Fixed problems with signals and multi-unit trains.
- Fixed train leaving depot not updating connected signals.
- Fixed problem with train Move to Depot not updating signals properly.
- Fixed bridge costs not showing.
- Better vehicle speed balancing.
- Fixed full train speed value in the depot window not showing up properly.
- Added Empty Train speed to the depot window. Depot now displays Full speed/Empty speed (Maximum speed)
- Locomotives operating in tandem have flat -250 000 € operating cost. Depot now displays Main engine Op. cost/Tandem engine Op. Cost
- Fixed log wagon.
- Improved railroad snapping and added rail/road spline endpoint snapping.
- Added road non-freeform snapping.
