Added apache commons-math3 as a dependency. If it needs to be removed,
will reverse engineer the parts we're using.
Replaced KMeansAdapter with ApacheKMeansAdapter
Added chi square adapter for apache commons
Fixed an unintended IndexOutOfRange exception that occurred when an
empty cluster was created. Whether to allow empty clusters is another
matter.
Changed clusterprovider to return a list of InstanceRetainingCluster
Switched out adapters for new ones. Replaced instances of cluster with
InstanceRetainingCluster.

Trying to induce change in the RBF generator that can be detected.
Removed debug leftovers