Fix a bug in the shapelet.expand method
(#535)
Switch from direct back to real_space.  And drawKImages to drawKImage.
(#535)
Fix up the internal logic of the drawImages command to be significantly clearer.
(#535)
Remove some unnecessary copy() commands
(#535)
Use new drawImage command in demo scripts
(#535)
Add more detail to the diff checks to see if they are important or not.
(#535)
Slight tweak to current way to convolve by pixel in config -- gets most of the slight numerical difference to go away.
(#535)