[racket] image->color-list in WeScheme?

> Hello!  WeScheme doesn't have image->color-list at the moment.
>
> Given HTML5 gives us Canvas.getImageData(), it should be
> straightforward for us to add support for it.  Out of curiosity, what
> kind of program are you thinking of writing with it?


Followup: I have an implementation of image->color-list and
color-list->image in place, but it's not in production yet.

https://github.com/dyoo/mzscheme-vm/commit/cff671c429d7b7dd0b8ec08163a09a9fbe92c2d0

https://github.com/dyoo/mzscheme-vm/commit/9f28d398e2e0cf95d01575b8d4915003012c4a94


I need to do a little bit more work because I really should be
exposing the functions that use alpha transparency.  I need to do some
code cleanup in WeScheme before I can make that happen.


I should have this on the WeScheme development site fairly soon for
you to play with.