Log Message:
py-alphalens: updated to 0.3.6

v0.3.6
Add option to compute forward returns non-cumulatively

v0.3.5
This is a minor release from 0.3.4 that includes bugfixes, speed enhancement and \ 
compatibility with more recent pandas versions. We recommend that all users \ 
upgrade to this version.

v0.3.4
This is a minor release from 0.3.3 that includes bugfixes, small enhancements \ 
and backward compatibility breakages. We recommend that all users upgrade to \ 
this version.

v0.3.3
TEST: added tests for perf.mean_return_by_quantile