Hopefully last version of the reactionTimer
May need to check the CPU frequency to match with the rest of the book
"disasm" is a synonym in the Makefile
working on trimming down so that it fits well in book
next iteration will have all interactivity out of the ADSR
Worked out usartTX and much-improved cap sensor demo
changed >= to == in fancy timers.  was a thinko.
still haven't figured out how to deal with headers in makefile
interrupt game is now reaction-time game, much more fun
much changed in dds -- killed interactivity for simplicity
misc changes
brute-force PWM version of code