method to query current vertex set.

incorrectly

trimesh ray.intersect_id function.

convinced that this is foolproof, but it seems to work.

featdesign.loadDesignMat function

by GiftiSurface. Adding comments to confusing model fit code to try
and make refreshing our memories easier.

kept in these classes, instead of in FSLeyes.

of (M*3,). New gifti module for basic gifti surface support.

identifying reference image associated with a FIRST vtk file.

log.memory .. all the __init__ stuff will make its way over to FSLeyes.

from a label file. Other minor typo fixes.

GC'd before class instances - calls to log inside __del__ were bombing
out.

be > high bounds, causing rendering/bounds calculation problems. Other
minor fixes.

level.

because the DC.bounds property cannot be unbound.

non-volumetric data. Need to test, and need to update render.py

support more data types, I can look at organising a class/name
hierarchy but, until then, Model will be fine. Bugfix to overlayselect
panel (name property callback now being passed Display instead of Image).

are now required to have a 'name' attribute and a 'dataSource' attribute.