Function evaluate 

pub fn evaluate(
    dirs: &Dirs,
    trusted: &BTreeMap<String, Vec<String>>,
    options: &Options,
    progress: &mut dyn FnMut(&Progress),
    cancel: &Cancel,
) -> Result<Evaluation, LearnError>

Tests the table in place on the newest fifth of the corpus as it is now, without training: aggregate numbers only (sioul spam eval). New mail since the training makes it a test of how the table holds up.