Realistic Truck Physics v5.4 1.28.x-1.30.x

v5.4 released. Changes;
- Now compatible with Scania R-4 by RJL.
- Bug fixes.

Features;
- Realistic suspension springing
- Realistic cabin shake
- Realistic braking simulation
- More difficult overturning on curvy roads
- Physics is better when you using your truck with a trailer.
- Compatible with current ETS 2 trucks.
- Also, compatible with these truck mods: RJL's Scania R & R-4 - 50keda's DAF XF - Ohaha's Volvo FH 2013 - MADster's MAN TGX Euro 6