Source-file copyright and license notices, preserved verbatim.

===== src/lib.rs (source SHA-256 0d9fc7398473ec9fbaaf4a3fec315250c5da1a79b1d264e0a7b63e48f44305b8) =====
// Copyright ⓒ 2015-2016 Kevin B. Knapp and [`clap-rs` contributors](https://github.com/clap-rs/clap/graphs/contributors).
// Licensed under the MIT license
// (see LICENSE or <http://opensource.org/licenses/MIT>) All files in the project carrying such
// notice may not be copied, modified, or distributed except according to those terms.
