Added all the UCI datasets in csv format.
Fixed a bug where Dirichlet couldn't classify if it were empty.  This should never occur, but it does due to a bug in DTree occasionally.  It shouldn't affect results though because it happens very rarely.
redoing dual tree knn
blahblah
gave up on prefetching
refactored source tree to work on logreg
converted datasets into csv
added files for creating image histograms
graph data sets
Merge branch 'master' of http://github.com/mikeizbicki/datasets into antipolymorphism