umlauts 0.1.1

library for text transformation of german umlauts
Documentation 
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use std::io::{stdin, BufRead};
use umlauts::UmlautsOwned;

fn main() -> std::io::Result<()> {
    for line in stdin().lock().lines() {
        let mut line = line?.into_bytes();
        line.make_utf8_umlauts_lowercase();
        println!("{}", String::from_utf8(line).unwrap());
    }

    Ok(())
}