Rush2005-0.3.4a released

The play selection screen has been revamped, and the first down line is a traditional 10 yards now, instead of 20. Hopefully I can improve the computer AI a little and push it back to the Blitz-style 20 again.

There's also a new function in gametk that flushes events that build up. If anybody has noticed that sometimes the computer jumps the gun on your selections (reading a keypress too early or whatnot), let me know, and I'll spread that function around. This is a fix applied to 0.3.4 in the 'aendeuryu' dev section which won't be considered part of the default branch history.