Fix annoying bug where choosing 'r' on a group menu got confused with ESC to get out.
Update copyright statements; fix a couple of years.
Delete TODO file, as replaced by the other txt file (which also
needs updating).
Give helpful message in an OmException, instead of just an assertion
exeption that would have been thrown.
Make user press a key before removing the license summary, so they
can easily notice it (previously scrolled by).
tweak text re licenses