Licensing is murky

If this is "literally copied from the React 0.14 codebase" then it's also subject to the patent grant included with that release of React.

It would be good to clarify this.

Review the repository's existing license and documentation alongside the React 0.14 patent grant referenced in the issue. Done means the project's relationship to that grant and any applicable licensing terms are clearly documented.

索引モデルが issue の本文から書いたものです。