A simple, local actor framework.
```rust use ::std::time::Duration; use ::tokio::time::sleep; use ::yaaf::prelude::*;
struct MyMessage;
struct MyActor;
impl Handler
async fn main() { let mut system = System::new().await;
let actor = MyActor;
let addr = system.add_actor(actor).await;
addr.tell(MyMessage);
sleep(Duration::from_millis(100));
system.shutdown().await;
} ```