Make Gtfs::from_path to accept non-displayable path

src/gtfs.rs

@@ -107,7 +107,7 @@ impl Gtfs {
     /// Reads the GTFS from a local zip archive or local directory
     pub fn from_path<P>(path: P) -> Result<Gtfs, Error>
     where
-        P: AsRef<std::path::Path> + std::fmt::Display,
+        P: AsRef<std::path::Path>,
     {
         RawGtfs::from_path(path).and_then(Gtfs::try_from)
     }

src/gtfs_reader.rs

@@ -225,7 +225,7 @@ impl RawGtfsReader {
     /// Reads the raw GTFS from a local zip archive or local directory
     pub fn read_from_path<P>(&self, path: P) -> Result<RawGtfs, Error>
     where
-        P: AsRef<Path> + std::fmt::Display,
+        P: AsRef<Path>,
     {
         let p = path.as_ref();
         if p.is_file() {

src/raw_gtfs.rs

@@ -85,7 +85,7 @@ impl RawGtfs {
     /// Reads the raw GTFS from a local zip archive or local directory
     pub fn from_path<P>(path: P) -> Result<Self, Error>
     where
-        P: AsRef<Path> + std::fmt::Display,
+        P: AsRef<Path>,
     {
         GtfsReader::default().raw().read_from_path(path)
     }