start version 1.4.3
revise sdr setup dialog using tabs; previous dialog too large to fit
  on small screens
Make several dialogs modal. This makes more sense, many of these
are settings that should not be changed while continuing to
operate. CW macros not modal, can adjust these and still operate
(must still  press enter for the updated messages to be used).
Update help
Update dates in README
Remove "borderless" option
Remove borderless from help file
source code cleanups
remove some variables never used
Remove unused variable keyInProgress
remove unused variable aboutActive
small correction in audioreader_portaudio.cpp
add processEvents to screenshot function to hopefully reduce lag
in bandmap updates when taking a screenshot.
use NRIG rather than "2" in dupesheet code
so2sdr_readconfig.cpp is an old file, no longer used
wpmdialog removed from git; no longer used
should not be keeping local copy of fftw3.h
Merge branch 'master' of github.com:n4ogw/so2sdr
Update help file, merging changes from two different computers
here.