Includes:
* new performance numbers. Very exciting. Very cool. Ambient lighting
helps!
* deprecating the old 8-color mode ("mode 8C" under the new naming
scheme). This simplifies things, and a newer, faster format is waiting
in the wings...
* misc updates based on what I've learned
* technically, because we're using SINGLE_FILE=1 "instead of" WASM=1,
we're building asm.js and not "wasm". However, with that one change to
the CMakeLists.txt, we get wasm build products, and therefore I do not
see any problem using wasm as shorthand for all this nonsense!