mwaskom/seaborn: v0.12.0b0

This is the first beta release for seaborn v0.12, a major release introducing an entirely new interface along with numerous enhancements and fixes to existing functionality.

To install for testing, run

pip install seaborn=v0.12.0b0

Changes from the final alpha release:

• Add Scale.label interface for formatting tick labels (#2877)
• Allow suppression of legend for individual layers (#2834)

• Add new errorbar API to pointplot and barplot (#2866)
• Add width parameter to barplot (#2860)
• Add orient parameter to lineplot (#2854)
• Allow histplot to draw discrete histograms with step or poly marks (#2859)
• Downgrade exception in relational plots with palette of incorrect length to a warning (#2856)
• Use alpha from point mark for error bars in regplot (#2853)
• Improve user-friendliness of jointplot (#2863)
• Preserve upper left y axis label in pointplot with corner=True and diag_kind=None (#2850)
• Improve support for anonymous data objects in relplot (#2846)
• Fix histplot dodged bar widths with log scale (#2849)
• Fix hue_order as a subset in scatterplot (#2848)
• Fix several bugs in the new categorical scatterplot features (#2845)