Unit tests moved into the package.
Added unit test for multiprocessing.
Added a unit-test for UCLUS linkage.
Added unit-test for uclus linkage.
single-linkage test less prone to alg. changes.
Added unit-test for complete linkage.
Test data fixed!
Added tests for gihub issue #11
Fixed stdlib test runner.
Using Python2.7 unittest "skipping"
This also makes the test properly runnable using py.test.
Fix for issue #10
KMeansClustering now accepts an optional equality function. This is useful
when using numpy arrays as inputs.
Unit tests renamed to "test.py".