Unicode Invert Text

```rust extern crate cryptoinvert; use cryptoinvert::{decode, encode};

[test]

fn testencoding() { let r1 = encode("i love you!"); let r2 = encode("I LOVE YOU!"); asserteq!(r1, "ᴉ ꞁoʌǝ ʎon¡"); assert_eq!(r2, "I ꞀOɅƎ ⅄O∩¡"); }

[test]

fn testdecoding() { let r1 = "i love you!"; let r2 = "I LOVE YOU!"; asserteq!(decode(&encode(r1)), r1); assert_eq!(decode(&encode(r2)), r2); } ```

There are thousands of possibilities in ciphertext, but there is only one corresponding information.

Notice that the version number used for encryption and decryption must be the same, because the key will keep expanding.