Improve the Hacking Guide.
More timeline stuff.
Dave Matuszek objected the the Thingy shooting back. So let it be written, so let it be done, OPTION_THINGY is gone, than the Thingy can't be angered.
Typo fix.
Punctuation fix.
Added cloaking.
Documentation polishing.
Import SCORE command, tracking Tom Almy's change.
Add test-suite instructions.
Fix a bug and document some procedures.
Add a 'check' production to integrate test machinery.
Typo fix.
Typo fix.
Typo fix.
Move a comment that really belonged in the design notes.
More documentation improvements.
Imprive documentation, fix a typo, add the hacking guide.