title: JSON.stringify and unicode characters
body: <p>I have to send characters like <strong>ü</strong> to the server as unicode character but as a string. So it must be <code>\u00fc</code> (6 characters) not the character itself. But after <code>JSON.stringify</code> it always gets <strong>ü</strong> regardless of what I've done with it.</p>
  
  <p>If I use 2 backslashes like <code>\\u00fc</code> then I get 2 in the <code>JSON</code> string as well and that's not good either.</p>
  
  <p>Any trick to avoid this? It's very annoying.</p>
  
  <p>Ok, I forgot: I can't modify the string after <code>JSON.stringify</code>, it's part of the framework without workaround and we don't want to fork the whole package.</p>