Changes in v2.5a
----------------
 
- Corrected a problem reading SFDOORS.DAT.
- Corrected documentation on upgrading from v2.3.

Changes in v2.5b
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- Super Jackpot was not being reset properly after being won - corrected.
- Hitting [ENTER] alone on first bet now causes 'Invalid Bet, Bet again!'
  to be displayed.