editor has changed quite a lot, mostly to implement a
new scrolling model.</p>

<p>Editor height is now set on the outer wrapper element (CSS
class <code>CodeMirror</code>), not on the scroller element
(<code>CodeMirror-scroll</code>).</p>

<p>Other nodes were moved, dropped, and added. If you have any code
that makes assumptions about the internal DOM structure of the editor,
you'll have to re-test it and probably update it to work with v3.</p>

<p>See the <a href="manual.html#styling">styling section</a> 