Rails of War

RailsOfWar-1.12.2-1901-4o
Forge-1.12.2-14.23.4.2705+

This build focuses on train physics and proper tractive calculations. Coupling / releasing cars should work fine in a single game session (save/load will break things). Mass of the train is now calculated properly to be used in the tractive effort equations. Right now, draw gear is working properly and buffer gear needs some tweaks yet. 

Some quality of life tweaks as well, as the new model for couplers of the car which has "coupling mode" on, some rolling train sounds and a smoke trail for Kof.

Please note trains aren't in the stable state yet.