ENH Dataset:  add .equalize_counts() method
ENH _Effect:  add .enumerate_cells()
ENH Var.as_factor():  add `random` argument
ENH datasets:  add fake rm to mne
profile script:  for anova
profile script:  connectivity
profile script:  connectivity with timeit
OPT testnd:  cythonize non-adjacent cluster merging
DOC testnd