title: Multiline tooltip doesn't work programmatically
body: <p><code>&amp;#13;</code> is supposed to separate lines on tooltip hover.</p>
  
  <p>This doesn't work:</p>
  
  <pre><code>var doesntwork = document.getElementById("doesntwork")
  doesntwork.title = "line1&amp;#13;asdfa";
  </code></pre>
  
  <p>But doing it in the html works:</p>
  
  <pre><code>&lt;div title="line1&amp;#13;asdfas" id='works'&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>See an example of this here, just hover on the squares:</p>
  
  <p><a href="https://jsfiddle.net/foreyez/3yg535jq/" rel="nofollow">https://jsfiddle.net/foreyez/3yg535jq/</a></p>
  
  <p>Is there something I'm missing?</p>