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)
ENH: add dictionary for multipletesting methods
REF: rename _proportions (un-privatize)
ENH: add tests for proportions (copied from devel script)
TST/DOC first test and example for proportion tests
TST test_pairwise.py put tabs back in (error in string parsing)
REF: proportions_chisquare_allpairs return Results instance
TST more unittests for prop test
TST add tests for binom_test