Version 1.9.5

This release includes a very small number of minor bugfixes and a new feature to simplify setting options in python:

Enhancements:

• Added .options method for simplified options setting. (#2306)

Fixes:

• Allow plotting bytes datausing the bokeh backend in python3 (#2357)
• Allow .range to work on data with heterogeneous types in Python 3 (#2345)
• Fixed bug streaming data containing datetimes using bokeh>=0.12.14 (#2383)