RF: Start cleaning up the data input logic (broken)
RF: Improve function name, remove unnecessary imports
RF: Standardize on -o/--output for output options
RF: No positional arguments anymore
RF: Kill obsolete data IO functionality (still broken)

hyperalign needs an overhault now.
RF: Establish arg2ds() as the standard way to load datasets
ENH: Allow for multiple expressions in pytest
ENH: Turn examples into tests
TEST: Include 'select' command in dataset example
DOC: More doc bits for the cmdline
RF: pymvpa2-analysis is obsolete
RF: Attempt to merge atlaslabeler into the new cmdline framework