in the ptk window now (no more print statements) with color highlights
for recent validity/repeat information, a nicely formatted timer, the
ability to pause the game, and easily configurable fonts. It's only
about 250 loc. God, I love Perl.
Oh, and I got it so validity is checked on disk, with no pre-loading
of the whole dictionary into memory. The reformatted version of
/usr/share/dict/words (just a trie) is only about the same size
as the original file.