BUG Use .div() to divide for Pandas 0.17 compat.
BUG Use .div() to divide for Pandas 0.17 compat.

ChinaQuants/pyfolio,YihaoLu/pyfolio,ChinaQuants/pyfolio,femtotrader/pyfolio,femtotrader/pyfolio,quantopian/pyfolio,quantopian/pyfolio,YihaoLu/pyfolio,chayapan/pyfolio