Update python-seaborn to 0.9.0 and drop Python2 support
Changes
- Three completely new plotting functions have been added: catplot, scatterplot, and lineplot.
- Reorganized and updated some axes_style/plotting_context parameters to take advantage of improvements in the matplotlib 2.0 update.
- Updated the seaborn palettes ("deep", "muted", "colorblind", etc.) to correspond with the new 10-color matplotlib default.
Full Changelog availale here.