Function trigram::find_words_iter

Important traits for Matches<'n, 'h>

impl<'n, 'h> Iterator for Matches<'n, 'h> type Item = Match<'h>;

pub fn find_words_iter<'n, 'h>(
    needle: &'n str, 
    haystack: &'h str, 
    threshold: f32
) -> Matches<'n, 'h>