`Box<str>`. `Arc<str>` and `Rc<str>` should implement `AsRef<[u8]>`, `AsRef<Path>`, `AsRef<OsStr>`, and `FromStr`

[Conaclos]

The String and str type implements AsRef<str> and AsRef<[u8]>, AsRef<Path>, and AsRef<OsStr>.
Conversely, Box<str> implements only AsRef<str>.
This looks like a miss of opportunity.

Box<str> should also implement AsRef<[u8]>, AsRef<Path>, AsRef<OsStr>, and FromStr.

[oriongonza]

Same for Arc<str> and Rc

[Conaclos]

They could also implement FromStr.