October 5, 2000: released v1.0
  - one-point-oh!

October 3, 2000: released v0.995
  - minor cosmetic fixes
  - made 'make install' work; made it easier to redefine file locations
  - made it so three-decimal-place version numbers work :)
  - made level 100 loop forever instead of just ending the game there. 
    not that level 100 is any fun, really -- too many penguins!


October 2, 2000: released v0.98
  - first public release
