Use GifTI files by default
Ack, write_gii used .npz as extension!
webshow no longer requries flat
fix additional gii errors
remove three.js postfilters to avoid browser warnings
Fix aligner with qt4
Add pick figure notify
Fix roi lines after changing thickness mapping
Update of quickflat to allow:

(1) Underlay of cortical curvature (with_curvature=True).
Variables controlling the appearance of the curvature are stored in defaults.cfg and can be
overwritten with options.cfg: min/max ( =contrast), threshold (boolean True/False)

(2) Cutouts of particular areas on the cortex.
Cutouts are named sub-layers of a "cutouts" layer in the rois.svg files (which must be added
for each subject). A given cutout (only one, for now(?)) must be named with the keyword
argument "cutout", e.g. quickflat.make_figure(Data,cutout='Visual Cortex L'). Axis coordinates
should be consistent with larger flatmap (though this has not been tested).
Merge branch 'flat_cutouts' of https://github.com/jamesgao/pycortex into flat_cutouts
(Rebased to master)