New validations, sorting out a few bugs

Signed-off-by: David Brainard <brainard@psych.upenn.edu>
Get rid of old versions

Signed-off-by: David Brainard <brainard@psych.upenn.edu>
OK, think this is in stable state for today.

Signed-off-by: David Brainard <brainard@psych.upenn.edu>
Merge branch 'dev' of https://github.com/isetbio/isetbio into dev