ctrlc 3.4.4

# CtrlC
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A simple easy to use wrapper around Ctrl-C signal.

[Documentation](http://detegr.github.io/doc/ctrlc/)

## Example usage

In `cargo.toml`:

```toml
[dependencies]
ctrlc = "3.4"
```

then, in `main.rs`

```rust
use std::sync::mpsc::channel;
use ctrlc;

fn main() {
    let (tx, rx) = channel();
    
    ctrlc::set_handler(move || tx.send(()).expect("Could not send signal on channel."))
        .expect("Error setting Ctrl-C handler");
    
    println!("Waiting for Ctrl-C...");
    rx.recv().expect("Could not receive from channel.");
    println!("Got it! Exiting..."); 
}
```

#### Try the example yourself
`cargo build --examples && target/debug/examples/readme_example`

## Handling SIGTERM and SIGHUP
Add CtrlC to Cargo.toml using `termination` feature and CtrlC will handle SIGINT, SIGTERM and SIGHUP.

## License

Licensed under either of
 * Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
 * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
at your option.

### Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in the work by you shall be dual licensed as above, without any
additional terms or conditions.

## Similar crates

There are alternatives that give you more control over the different signals and/or add async support.

- [signal-hook](https://github.com/vorner/signal-hook)
- [tokio::signal](https://docs.rs/tokio/latest/tokio/signal/index.html)