FIX: celltable

forward cellname delim arg
DOC
ADD: is_fake_mri()
ENH: mne_experiment

- preserve .state through .iter_vars()
- FIX .summary()
- ADD: 'fiducials' template
FIR: plot.coreg.mri_head_viewer

- save button label
- properly update parameters after fit
ENH: plot.coreg

- get_subjects_dir
- mri_head_fitter: fit() uses current params as starting point
- .save(): progress indicator
ENH: mri_head_fitter.save()

if no s_to, use self.s_from
ENH: mne_experiment.summary

use plot.coreg.is_fake_mri()
ENH: mri-head coregistration

mri_head_viewer:
- check whether MRI-dir exists on __init__
- ADD: "Restore fit" button
- ADD: shrink parameter
mri_head_fitter:
- .save(): write full T to MRI-dir
Rename: mult -> scale
ENH: mri-head coreg

- mri_head_viewer: figure text label
- plot head-shape in blue
ENH: plot.coreg.mri_head_

Plot digitizer fiducials with same color as digitizer head-shape
ADD: ui.ask_str()
cleanup (autoformat)
FIX: plot.coreg.mri_hed_fitter

FIX MRI scaling
FIX: plot.coreg.mri_head_fitter.save()

use correct scales
cleanup
cleanup
plot coreg

FIX: mne_experiment coreg plotting
ADD: plot.coreg.dev_mri
ADD: plot.coreg.geom_dig_hs, .geom_bem
ADD: plot._base.ImageTiler

+ used by plot.coreg.dev_mri.save_views()
ENH: mne_experiment.makeplt_coreg()

allow variables and values kwargs