ENH plot-uv:  accept normal layout kwargs
WIP plot-color:  tools for color dicts
STY:  use _EelFigure directly
STY plot (pep8):  legend -> Legend
ENH datasets.get_uv():  seed random state
FIX plot-uv:  respect matplotlib-RC
ENH plot:  better frame titles for `y`-plots
FIX plot:  Layout
ENH Barplot:  `top` argument
API plot.Barplot:  title default to None
ENH plot-uv:  option to turn off star markers in pairwise comparisons
API plot.Boxplot:  title default to None
STY plot-uv
ENH Barplot:  `xticks` argument
RF plot:  EelFigure signature
STY plot.Timeplot
ENH plot-color:  oneway, layout, use for other plots

AMD color
RF EelFigure:  create axes in __init__