Function tiny_actor::spawn_default

pub fn spawn_default<T, R, Fun, Fut>(fun: Fun) -> (Child<R>, Address<T>) where
    Fun: FnOnce(Inbox<T>) -> Fut + Send + 'static,
    Fut: Future<Output = R> + Send + 'static,
    R: Send + 'static,
    T: Send + 'static, 

spawn with Config::default.