Function make_linked 

pub(crate) fn make_linked(
    qt: &CxxQtThread<Sioul>,
    shared: &Arc<Shared>,
    kind: &str,
    from: &str,
    key: &str,
    start: f64,
) -> String

Something new tied to from: “task” or “note” (made here), “mail” (a draft). key and start say which message or which occurrence, when it is one. Returns {“uid”}, {“path”}, {“draft”} or {“error”}.