yui/yui3 — pull request #564 by rgrove (2013-03-28 23:06:54+00:00)
Title: Tree: size() should include the root node in its count.

![updown](https://f.cloud.github.com/assets/1465/315975/190ab8a6-97fc-11e2-8506-9e4b383c3a27.gif)