title: Swift 3 convert unicode string U+1F600
body: <p>so I'm trying to convert a unicode string <code>U+1F600</code> coming from json into a UILabel but having a hell of a time.</p>
  
  <p>Has anybody encountered this?  It also seems JSON coming in as <code>\u1f600</code> has the same issues.</p>
  
  <p>I've tried this method with no luck:
  <a href="https://stackoverflow.com/questions/7177808/emoji-characters-cannot-be-encoded-to-json">Emoji characters cannot be encoded to JSON</a></p>
  
  <p>Thanks so much</p>