re-license tree._reingold_tilford as BSD
-# taken from https://github.com/llimllib/pymag-trees/blob/master/buchheim.py
-# with slight modifications
-
-# DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
-# Version 2, December 2004
-#
-# Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
-#
-# Everyone is permitted to copy and distribute verbatim or modified
-# copies of this license document, and changing it is allowed as long
-# as the name is changed.
-#
-# DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
-# TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
-# 0. You just DO WHAT THE FUCK YOU WANT TO.
-
+# Authors: William Mill (bill@billmill.org)
+# License: BSD 3 clause
import numpy as np
