Extracted mine()
Added partial implementation of clustering by decision tree
Fully implemented decision tree clustering
Fix: was skipping second partition
Added base for CLTree and old basic clustering alg I wrote
Added database count methods
Used alglib's k-means for clustering
Removed old CLTree implementation attempt
Measured error on old algorithm (it's very bad)
Removed cluster by orthogonality (the old algorithm)
Renamed k-means class to correct name