Copyrights in the RecurFn project are retained by their contributors. No
copyright assignment is required to contribute to the RecurFn project.
For full authorship information, see the version control history.
Except as otherwise noted (below and/or in individual files), RecurFn is
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.
The RecurFn project includes code from the Rust project
published under these same licenses.