Log message:
revert wrong fix for py-scipy python 3.6 deprecation, fix properly

Log message:
py-pyfolio: updated to 0.9.2

0.9.2
BUG Get axis instead of figure.

0.9.1
This is a bugfix release fixing an indentation bug.

0.9.0
New features
Previously, pyfolio has required a benchmark, usually the U.S. market
returns SPY. In order to provide support for international equities and
alternative data sets, pyfolio is now completely independent of benchmarks.
If a benchmark is passed, all benchmark-related analyses will be performed;
if not, they will simply be skipped.
Performance attribution tearsheet
Improved implementation of get_turnover
Users can now pass in extra rows (as a dict or OrderedDict) to display in the \ 
perf_stats table

Maintenance
Many features have been more extensively troubleshooted, maintained and
tested.
Various fixes to support pandas versions >= 0.18.1

Log message:
finance/py-pyfolio: Import version 0.8.0

pyfolio is a Python library for performance and risk analysis of
financial portfolios developed by Quantopian Inc. It works well with
the Zipline open source backtesting library. At the core of pyfolio is
a so-called tear sheet that consists of various individual plots that
provide a comprehensive image of the performance of a trading
algorithm.