`valid` is dual-licensed under The MIT License [1] and
Apache 2.0 License [2].

Copyright (c) 2019, The `valid` developers.

All files in the project carrying such notice may not be copied,
modified, or distributed except according to those terms.

[1]: LICENSE_APACHE or http://opensource.org/licenses/MIT
[2]: LICENSE_MIT or http://www.apache.org/licenses/LICENSE-2.0