Implements new alerts for train statuses mentioned in the Factorio Friday Facts #395. Trains will now alert if there's no path, instead of showing red text popup. And now there would be an icon over the train if destination is full, if alt mode is enabled. This mod is pretty much irrelevant for Factorio 2.0, because it was added in vanilla Factorio as a feature (this mod was basically porting this feature to Factorio 1.1 before 2.0 released).
Small changes concerning balance, gameplay, or graphics.
