This crate is licensed under the Apache License, Version 2.0 (see LICENCE-APACHE or http://www.apache.org/licenses/LICENSE-2.0) or the MIT licence (see LICENCE-MIT or http://opensource.org/licenses/MIT), at your option.
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.