timeago 0.6.0

Given a Duration, lossily format it like in 'N days ago'. Parsing it back to Duration is not supported yet.
Documentation 
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use super::super::{Language, TimeUnit};

#[derive(Default)]
pub struct Spanish;
impl Language for Spanish {
    fn clone_boxed(&self) -> super::super::BoxedLanguage {
        Box::new(Self {})
    }
    fn too_low(&self) -> &'static str {
        "ahora"
    }
    fn too_high(&self) -> &'static str {
        "hace mucho"
    }
    fn ago(&self) -> &'static str {
        "hace"
    }
    fn get_word(&self, tu: TimeUnit, x: u64) -> &'static str {
        use TimeUnit::*;
        if x == 1 {
            match tu {
                Nanoseconds => "nanosegundo",
                Microseconds => "microsegundo",
                Milliseconds => "milisegundo",
                Seconds => "segundo",
                Minutes => "minuto",
                Hours => "hora",
                Days => "día",
                Weeks => "semana",
                Months => "mes",
                Years => "año",
            }
        } else {
            match tu {
                Nanoseconds => "nanosegundos",
                Microseconds => "microsegundos",
                Milliseconds => "milisegundos",
                Seconds => "segundos",
                Minutes => "minutos",
                Hours => "horas",
                Days => "días",
                Weeks => "semanas",
                Months => "meses",
                Years => "años",
            }
        }
    }
    fn place_ago_before(&self) -> bool {
        true
    }
}

#[test]
fn test() {
    use super::super::Formatter;
    use std::time::Duration;
    let f = Formatter::with_language(Spanish);
    assert_eq!(f.convert(Duration::from_secs(60)), "hace 1 minuto");
}