Ensure that tuples are not considered as data, not as data containers
DOC: Update for Cython changes.
Merge pull request #822 from jseabold/fix-install-doc

DOC: Update for Cython changes.
Test with tuple variable names
Import OLS directly from module
Merge pull request #820 from toobaz/fix_tuples_printout

SimpleTable: Ensure that tuples are considered as data, not as data containers
ENH: Add load function to main API. Closes #840.
Merge pull request #841 from jseabold/add-load-function

ENH: Add load function to main API. Closes #840.
DOC: add pairwise_tukeyhsd (instead of tukeyhsd) to docs, some cleanup
STY: test_pairwise reformat
BUG: multipletest, fix 'h', 'hs' if all rejected, closes #763
BUG/TST: multipletests fix reject for 'hs', fix weak, strict inequality closes #764
REF: fdr_correction_twostage change definition of pvalscorr,
     add 'fdr_twostage' option to multipletests, some doc improvement
REF/TST: fdr small changes, refactor and add tests,
         1 failure https://github.com/statsmodels/statsmodels/issues/766#issuecomment-16235892
ENH/REF: fdr_correction_twostage: add 'fdr_tsbky', 'fdr_tsbh' separately
         tests pass but needs proof reading
TST: activate test for last change, some test cleanup
BUG: fdrcorrection_twostage fix pval and consistent return if we return after 1st stage
TST/STY  one more test case, some code cleanup (remove old comments)
REF: multipletesting missed an inequality
ENH: add normal based tests to weightstats (functions only)