tree.root(newRoot) now also works for binary trees. Fixed a bug which caused an error for the layout function when changing the root node.
tree.root(newRoot) now also works for binary trees. Fixed a bug which caused an error for the layout function when changing the root node.

RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,vkaravir/JSAV,RJFreund/OpenDSA,vkaravir/JSAV,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA,RJFreund/OpenDSA