Wardner SRAM Save

This patch adds a save feature and some tweaks to the US release of Wardner.

The patch makes the following changes to the original game:

• The high score table is saved in SRAM after a new score has been entered. The game loads the high scores again upon a fresh boot

• Your progress is saved in SRAM at the start of each new stage from stage 2 onwards. To resume at the save point, hold B while pressing Start at the title screen. You regain your power-ups and gold whereas score and lives are reset. If nothing has been saved, the game will just skip the intro scene and start at stage 1

• Since you now have infinite continues, the credits have been set to zero. The caveat is that you restart from the start of the stage instead of a check point. If you want to re-enable credits, you can use a Game Genie cheat

• On stage 4, the timer was originally reset after talking to the witch. Since this could be exploited to farm score points, it has been disabled

• Checksum check has been disabled. This allows the patch to be combined with other ones such as fusaru's arcade colors hack