ENH: mne_experiment.load_evoked()

check time axis consistency
ENH: dicttree() repr

try to display length for values
ENH load.fiff: add epochs_ndvar() conversion
ENH: plot.coreg.dev_mri() hs options
cleanup
ENH: wxterm PyplotManager

make PyplotManager.OnCloseAll() also close plots with wxterm frame
FIX: wxterm py-editor

Update namespace after running script