adding parts of cox regression
commiting before restart
tests pass
adding confidence intervals
removing scratch efron file, moving baldwin file for later inclusion
fixing test; cf.hazards_ are now dataframe
bump version
removing asserts
tf
adding rossi data, tests + more cox features
testing cox predictions
pepping the whole thing
add cox to rtfd and __init__.py
add python3 printing to stats.py
Merge pull request #62 from CamDavidsonPilon/cox-regression

Cox Regression