rune, RuneStr and RuneString

User-perceived characters type rune and its related types and data structures.

Example

```rust use runestr::{rune, RuneString};

fn main() { let runestr = RuneString::fromstrlossy("\u{0041}\u{0341}\u{304B}\u{3099}\u{9508}"); assert_eq!(3, runestr.runes().count()); } ```

License

<sup>Licensed under either of Apache License, Version 2.0 or MIT license at your option.</sup>

<sub>Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.</sub>