Retrieve dendrogram created by binary cut

[GreenGilad]

When using binary cut is there a way to retrieve the dendrogram created by the algorithm?

Looking at the code of binary_cut and plot_binary_cut it seems like binary_cut could have a flag if to return also the dendrogram or not. Not looking too deeply, it seems like such a flag could be passed to both cluster_mat and cluster_mat2.

[GreenGilad]

Please see mentioned pull request with additional suggestion