Make Gtfs::from_path to accept non-displayable path

[Jusduil]

Gtfs::from_path have where clause to force argument to implement Display.

But not called function are really want this.

It may be a relic to build a error string on RawGtfsReader::read_from_path but now it use p.display()

[antoine-de]

fine for me, thanks for spotting this.

Can you update the patch version number so this can be released right away?

[Tristramg]

Thank you. Funny enough, I just stumbled on that exact problem right now