ENH testnd.anova:  update and incorporate cluster test
FIX colorspaces:  typo in vmax info entry
FIX:  plot.topo.array()
FIX ClusterDist:  p value computation
API psyphys:  RM segment_ops;  superseded by ndvar
FIX plot.uts.clusters(): for anova results plotting
ENH plot:  .add_contour() method
API plot:  all axes in ._axes list
ENH WxTerm:  set redirect-stdio according to config from shell
FIX ttest:  meas is "t", not "T"
API plot:  consistency
DOC plot: __init__ arguments
ENH plot:  .set_data() method for im array plots
ENH plot.topo.butterfly():  implement .add_contour() method

topomap animation:  use topomap set_data() method instead of redrawing completely
ENH plot:  expose facecolor argument, default to "w"
ENH ClusterDist:  make flat shape explicit (detect being handed data with wrong shape)
FIX MneExperiment:  root behavior, fixing .push(), RM .pull()
DOC
STY: cleanup
WIP ENH plot:  more plot properties flexibility

- plot.topo.array:  add .add_contour()
- add `interpolation` parameter consistently