See also this post <a href="https://news.ycombinator.com/item?id=36088633" rel="nofollow">https://news.ycombinator.com/item?id=36088633</a><p>It's not open source, it has a sleazy commercial license that wants you to negotiate a royalty to use it. Stay away.<p>I'm very curious why HF would be calling this an open model.