Short version for non-laywers:
  The xz-rs project is dual-licensed under Apache 2.0 and MIT terms.

Longer version:
  Copyright 2020 Hyeon Kim

  Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  option. This file may not be copied, modified, or distributed
  except according to those terms.