- Add ability to rate-limit/block requests by origin (#45).
- Avoid crashing on invalid HTTP status codes (#95).
- Support and test coverage for latest Node.js versions (up to 9).
- Support `Access-Control-Max-Age` via `corsMaxAge` option.
- Listen on `0.0.0.0:8080` by default instead of `127.0.0.1:8080`.
  (use `HOST` and `PORT` environment variables to override this).
- Update gTLD list.