2017.08.19
Include Michael Eisen's original demo.txt example data in the distribution.
For k-means clustering, show the number of solutions found separately for genes
and arrays.
Let cuttree number the clusters incrementally in the left-to-right order of
the leaves in the hierarchical clustering tree.
Algorithm::Cluster::cuttree now returns an array.
Removed mean, median from the Python tests.
Updates for Unicode handling in Python3.
Fix slice bug in Pycluster's Tree class.
Write a new function sorttree that reorders a hierarchical clustering tree
such that the nodes are ordered according to a user-specified order, while
maintaining the structure of the hierarchical clustering tree. The sorttree
function is used in the HierarchicalCluster function, and can also be called
from Pycluster and from Algorithm::Cluster.
