Option parser with custom derive support
[Documentation](https://docs.rs/gumdrop/)
To include `gumdrop` in your project, add the following to your `Cargo.toml`:
```toml
[dependencies]
gumdrop = "0.8"
```
`gumdrop` is distributed under the terms of both the MIT license and the
Apache License (Version 2.0).
See LICENSE-APACHE and LICENSE-MIT for details.