Fixing a few Issues — Whiskey Island Steam update #397155

This update addresses a few issues that have been identified: - fixed: train suddenly stopped at certain locations while travelling; although it could be restarted, it would then becomes a 'run-away' which stopped responding to controls. The issue was traced to the unplanned activation of railcar coupler triggers which detect end-of-track buffers on sidings, and has been corrected. - patched: Tractor-Trailer vehicle does not re-spawn in the correct location when loading a saved game. The issue was traced to the way trailers are connected. A temporary fix has been employed pending planned changes to the way vehicle trailers are connected. In the meantime, the patch seems to work well, though for best results, before saving a game (on exit) try to park the Tractor-Trailer on a flat area with a the trailer aligned behind the cab, just like your commercial driving instructor always told you ...