CONTRIBUTING.md
## Public domain
The project is in the public domain within the United States, and
copyright and related rights in the work worldwide are waived through
the [CC0 1.0 Universal public domain dedication][CC0].
All contributions to this project will be released under the CC0
dedication. By submitting a pull request, you are agreeing to comply
with this waiver of copyright interest.
[CC0]: http://creativecommons.org/publicdomain/zero/1.0/