simple tree object
This module in an fully object-oriented implementation of a simple n-ary
tree. It is built upon the concept of parent-child relationships, so
therefore every Tree::Simple object has both a parent and a set of
children (who themselves may have children, and so on). Every
Tree::Simple object also has siblings, as they are just the children of
their immediate parent.

Maintainer: Mathieu Sauve-Frankel <msf@openbsd.org>
