syntastic 0.4.0

# Syntastic

[![Crates.io](https://img.shields.io/crates/v/syntastic.svg)](https://crates.io/crates/syntastic)
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## 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, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.

See [CONTRIBUTING.md](CONTRIBUTING.md).

## Thanks

* [Rust GitHub Template](https://rust-github.github.io/) for helping me set up
  sensible defaults for this repository.
* [Robert Harper](https://www.cs.cmu.edu/~rwh/) for formalizing abstract syntax in
  [_Practical Foundations for Programming Languages_](https://www.cs.cmu.edu/~rwh/pfpl/).