Added image reading capacities to ImageIO. Started to work on some basic
image generation in BasicPatterns and rendering various types of image
in Colourize.hs and Gradient.hs.
Main improvement: added `compGradientImage` to
Transformation.Gradient. Also started to do some basic Julia set stuff
so that there will be something nice to look at.
Forgot to export the function I added to Gradient, now fixed
Made various incremental imporvements to the file, no changes of great
significance.
Changed the type of Gradient to be more sensible. Refactored things to
make more sense. Added a way to compose gradients pretty naturally.
Made a large number of incremental improvements and began work on
creating a way to visualize images with OpenGl.