Dscr update to customize dscr without modifying main.
Additional boot/start/stop callbacks for customization without modifying main.
Break event if callbacks want the main loop to immediately handle data instead of wait 1 sec.
auto rdwr transactions sometimes don't get all the notifications.
Until we figure out why, using a check function to monitor tx bytes
and close the rdwr trans if appropriate.
Clean up a few warnings.
logging tweaks, thread priority.