Support for Deno?

Hi there, this is a cool library but does not have built-in support for Deno. I've [forked the repo](https://github.com/shah/javascript-stringify) and made minor changes to get it to work on Deno. Any interest in rolling in Deno support to your master branch?

If you're interested, [Denoify](https://github.com/garronej/denoify) is a tool that could make it easier?