;;; avl-tree.el --- balanced binary trees, AVL-trees
-;; Copyright (C) 1995, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
;; Author: Per Cederqvist <ceder@lysator.liu.se>
;; Inge Wallin <inge@lysator.liu.se>