some issues with hidden editors looping forever
  when line-numbers were enabled. Make PHP parser parse
  <code>"\\"</code> correctly. Have <code>jumpToLine</code> work on
  line handles, and add <code>cursorLine</code> function to fetch the
  line handle where the cursor currently is. Add new
  <code>setStylesheet</code> function to switch style-sheets in a
  running editor.</p>

  <p class="rel">01-03-2010: <a
  href="http://codemirror.net/codemirror-0.66.zip">Version
  0.66</a>:</p>
  <p class="rel-note"