Futures-aware shuttle synchronization object
Creates a new shuttle synchronization object for sharing values between two asynchronous tasks. Each half can be separately owned and sent across tasks.
``` extern crate futures; extern crate futures_shuttle;
use std::thread;
use futures_shuttle::shuttle; use futures::*;
fn main() { let (mut left, mut right) = shuttle(42);
assert!(left.is_mine());
assert!(!right.is_mine());
assert_eq!(left.get(), 42);
left.set(84);
left.send();
assert!(!left.is_mine());
assert!(right.is_mine());
assert_eq!(right.get(), 84);
} ```