mindstorm 0.8.0

This version revises mindstorm.statplot.plot_swarm_bar to make it easier to customize properties of the points, bars, and error bars.

• The plot_swarm_bar function now takes point_kws and bar_kws arguments to set arguments for point and bar plots, respectively.
• The capsize input has been removed. Set this using bar_kws={'capsize': mycapsize} instead.