Hi, I'm happy to showcase this kind of feature made possible by this library :)  I also wonder if this kind of feature, that I call [immediateStopTimes](https://github.com/laem/gtfs/blob/master/server.js#L405) in my code, could have a place in node-GTFS ? Or maybe in a list of projects using node-GTFS ?