FIX FileTree.push()
ENH testnd.corr():  combine corr() and cluster_corr(), OPT, TEST
FIX plot:  backend selection, make TESTs independent of running wx.App
DOC:  eelbrain.experiment API change
DOC:  eelbrain.data API change
FIX Celltable:  default X to None
DOC
DOC layout
API resample:  move `replacement` to earlier argument position, default to False
API stats:  eelbrain.statfuncs --> eelbrain.stats, add ftest_f and ftest_p functions
API lm_fitter:  provide .effects and .df_den attributes
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API psyphys:  RM segment_ops;  superseded by ndvar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