title: Open new windws with kiosk and chromium-args
body: <p>I am trying to build a kisok app that open a webpage in a new window. And on that new window i want to add the rule that only that webpage is allowed. But it seams that chromium-args is not a valid option on the open function. So if that option is not allowed how do i solv this problem?</p>
  
  <pre><code>var new_win = gui.Window.open('https://github.com', {
      kiosk: true,
      'chromium-args' : '--host-rules="MAP * github.com"'
  });
  </code></pre>