title: event.clipboardData.getData has no text/html in Safari
body: <p>In our app we process pasted content before inserting it into a contenteditable div. In Firefox and Chrome the paste  event.clipboardData.getData has two keys text/plain and text/html. In Safari it has ~12 keys that range from text to RTF but does not include the HTML the user pasted in any of them. How can I access this from the paste event?</p>
  
  <pre><code>$( 'div' ).on( 'paste', function( aEvent ) {
      var evt = aEvent.originalEvent;
      var text = evt.clipboardData.getData( 'text/plain' );
      var html = evt.clipboardData.getData( 'text/html' );
      var i, len;
  
      console.log( 'text=' + text );
      console.log( 'html=' + html );
  
      console.log( 'data types=' );
      console.log( evt.clipboardData.types );
  
      for ( i = 0, len = evt.clipboardData.types.length; i &lt; len; i++ ) {
          console.log( evt.clipboardData.types[ i ] + '=' + evt.clipboardData.getData( evt.clipboardData.types[ i ] ) );
      }
  });
  </code></pre>
  
  <p><a href="http://jsfiddle.net/njLxk9cw/" rel="nofollow">http://jsfiddle.net/njLxk9cw/</a></p>
  
  <p>Highlight both paragraphs, copy them, then paste on a new line and watch console.</p>
  
  <p>[edit]
  If I use Rangy's range.toHtml from the copy event I can save a snapshot of what was selected. In the paste event I check the clipboard first, then my saved fragment, then fallback to text. Ideally I'd like to get the clipboard API to work if possible.</p>