add anderson_ksamp
Replace & with and in citation and add year
Replace another & with and
fix typo in docstring
add blank lines after if blocks
Use ... for line continuation in docstring
Add comment to explain interpolation values
capital letter for each parameter description and period at end
combine a few simple statements
Change call signature of anderson_ksamp

- Replace discrete=False with midrank=True to better explain what the
  difference between tests is. Update the docstrings accordingly.
Add missing word to docstring
avoid computation of lj for continuous distributions; fix docstring for parameters
actually re-use saved searchsorted array instead of just saving it and then recomputing it ...