Merge pull request #6 from redline6561/literate

Add Literate-style Book, 0.9.3
Fix README typo.
Rewrite EXECUTE and 6502-STEP.
Add speedrun test using brk.
Rename *opcodes* to *opcode-meta*. Add *opcode-funs*.
Store lambdas in the *opcode-funs* array.
Store docs in the *opcode-meta* array too.
Fix the "jit". :)
Rewrite EXECUTE and 6502-STEP.
Makefile tweaks.
We don't need to store RAW-P in *opcode-meta*.
Minor README tweak.
Add perf notes.
Rewrite defaddress, getter and setter run at compile-time!
Rewrite status-bit handling.
Remove addressing tests, minor tweaks.
Update book with JIT, Lessons chapters.
Turns out we don't need the eval-when in defasm anymore. Huzzah!
Reorder for more pleasant reading.
Lots of little style tweaks.