Shunters and Coupling Tweaks — Locomancer Steam update #244903

Today's update is another small one, but delivers some fun stuff and sets us up for a feature I'm looking forward to down the line. The biggest change is the addition of two new diesel shunter/switcher locomotives: In addition to that, it's now possible to decouple the first and last cars in a train using the decouple controls: Note that it is the first/last car so if you have a train of multiple cars you will need to pull these levers multiple times to decouple all of the cars from your locomotive. And here's a preview of that upcoming feature that I mentioned: https://www.youtube.com/watch?v=lBQF5VXc4Wg The final version will likely be more sub...