ENH: remove useless features in demos
RF: do not allow untransposed datasets, and set the partitions properly balanced
TST: add doctest for check_partitions
ENH: only run doctest or unittest when a single file is tested
DOC: more documentation
NF: support different norms
TST: add doctests
DOC+SML: explain autoscale better
TST: add doctests
NF: support empty second argument
NF: support tests with error
TST: add more doctests
DOC: comment on using LDA classifier
BF+TST: update unit test with proper output
RF+ENH: properly support empty second input argument to split on whitespace