completed load/save method, test passes now. Fixed get_labels()
refactored clusterer creation. turned load/save test into proper unittest
first sketch of test with article data
first sketch of Katz-CLASSIT algorithm (starting off from https://github.com/cmaclell/concept_formation/blob/master/cobweb.py
working on the hierarchy
Merge branch 'clustering-alternatives' of github.com:ftzeng/argos_cluster into ihac_test
adding hierarchy restructuring