Converts English lettering to Kana. Currently functions on a per-syllable basis, including っ or ッ if needed.
```rust use to_kana::{ hira, // Hiragana kata, // Katakana };
let ko = hira("ko").unwrap(); let n = hira("n").unwrap(); let ni = hira("ni").unwrap(); let chi = hira("ti").unwrap(); // same as hira("chi")
// は is prounounced "wa" in "こんにちは", but is normally pronounced "ha" let wa = hira("ha").unwrap();
println!("{}{}{}{}{}", ko, n, ni, chi, wa); // こんにちは ```