changelog:
-adjusted couplers/draw bars to improve coupler stability when going around tight curves
-unique world id is saved to the savegame when there is none yet

Currently the new spline system is under development.
Therefore the coming beta-branch update is going to include a pre made railroad track along with a simple train setup.

We opt for the following benefits with the new system:
-fix bouncing client cars when driving or riding trains
-better FPS performance for server and client
-longer trains
-higher speeds for all trains
-longer splines and easier spline handling

We will inform you about the coming release date of the next beta branch version.
Thank you!