Feature Request: classes on img tags

Hi!

Great plugin – here’s one thing that would make it even sexier:

Add classes to the little images, making re-styling easier.

eg.

<div class="dtNode">
  <img class="dtLine" src="~~/line.gif" alt="">
  <img class="dtJoinbottom" src="~~/joinbottom.gif" alt="">
  <a ~~~~  </a>
</div>

Thanks!

https://www.ads-software.com/extend/plugins/wp-dtree-30/