Function path_case 

pub fn path_case(input: &str) -> String

Change to path case

use change_case::path_case;
assert_eq!(path_case(""), "");
assert_eq!(path_case("test"), "test");
assert_eq!(path_case("test string"), "test/string");
assert_eq!(path_case("Test String"), "test/string");
assert_eq!(path_case("TestV2"), "test/v2");
assert_eq!(path_case("version 1.2.10"), "version/1/2/10");
assert_eq!(path_case("version 1.21.0"), "version/1/21/0");