Support for Google App Engine

Is there any plans to support Google App Engine in the next versions of Slim?

Please suggest if any forks of Slim available to support Google App Engine.

If you are following this slim3 skeleton, you should config your app.yaml to something like:

runtime: php55
api_version: 1

- url: /css
  static_dir: public/css

- url: /.*
  script: public/index.php