title: youtube iframe api parameter rel=0 doesn't work
body: <p>I need to hide related videos after watching the video. I set <code>rel=0</code>, but it is not working. I am using <a href="https://developers.google.com/youtube/youtube_player_demo?hl=ru" rel="noreferrer">this page</a> for testing. The <code>rel</code> checkbox value doesn't affect on shown related videos after watching video.</p>
  
  <p>It doesn't work in google chrome. In mozilla firefox it properly works.</p>