Plays around with color palette definitions in mcmapgen.
Trying to pin down a suitable API for this.
Modifies mcb and mcbconv to include the Lowest and Highest
points in a map in the World structure. The map generator
can use these values to more accurately clamp color gradients
when generating overlays for heightmaps.
More playing around with mcmapgen implementation. Specifically,
the renderer. Added the ability to specify a custom color palette
for block ids, through a command line parameter. The default
color palette can be written out to a file, to serve as a template.