future-bool

A bool one can await the changes.

Example usage

```rust use future_bool::FutureBool;

[tokio::main]

async fn main() { let run = FutureBool::new(false); let run_clone = run.clone();

let task = tokio::spawn(async move {
    loop {
        // If run changes to false before `some_async_fn` is terminated, 
        // it will be interrupted.
        tokio::select! {
            _ = run_clone.wait_false() => break,
            _ = some_async_fn() => {}
        };
    }
});

// ... some other task sets run to false with 
// `run.unset()`
task.await;

} ```