Bring new trimPath helper in to InputFile
Bring new trimPath helper in to InputFile

Bring new `trimPath` helper in to replace `trim` for `relativePath()` method of `InputFile`
quickliketurtle/jigsaw,quickliketurtle/jigsaw,tightenco/jigsaw,adamwathan/jigsaw,quickliketurtle/jigsaw,tightenco/jigsaw,tightenco/jigsaw,adamwathan/jigsaw