DOC: Short collapse instructions for TOC
DOC: add changed to make.bat
Merge branch 'vincent_theming' closes #474
STY: remove old developement file from L1regularized
Little Fixes
- pep8 stuff
- a typo that might mess up the legendtitle
Merge pull request #518 from dengemann/enh_factorplot

Small fixes: graphics.interaction_plot
DOC: Add abline plot to docs
Merge pull request #521 from statsmodels/abline-docs

DOC: Add abline plot to docs
TST: Loosen tolerenace in tests. Closes #523.
BUG: Check shapes after data processing. Closes #517.
ENH: Add class to write Stata binary dta files
TST: Test StataWriter
ENH: Do not close file for user. Don't check mode for buffer
REF/DOC: Refactor to handle DataFrames and array-like. Add some docs
TST: Add some StataWriter tests
ENH: Add Stata internal format -> datetime converter
STY: Indent cleanup
ENH: Add date handling to genfromdta
TST: Test date handling in genfromdta
TST: Add scripts to generate tests