first cut
add squelch stuff
add gitignore
change mute to monitor button
keep more squelch history
deeper sampling range for squelch
add delaytest
Merge branch 'master' of git://minke/home/git/danphone
first cut at using 74174
tx drive working
tx drive working
add PA control
put back greyed out state for TX led if transmitter is powered off
dead code removal
rearrange muting stuff a bit
add rx attenuation
add button to do tx/rx changeover
control rx attenuate only from its methods rather than from tx ena/disa
fix comment
use specified bit for D74174 latch