Electrify regression bugfix

Fixed horrible bug with electrify introduced along with tail call optimizations in ROM version 2.

Improved Flash Cart Support

• Rework how the default player state is initialized to allow the game to run on flash carts without SRAM
• Add the option to hold SELECT when first initializing the player state to unlock all skills/upgrades, as a shortcut for players without SRAM
• Remove redundant bank switching writes which cause problem when run from a flash cart which mimics MBC5 (EMS or cheap repros)
• Ensure OAM is fully initialized before enabling objects for the boot logo effect

Post-Release Fixes

• Save new highscore/pearls when game is over, instead of when returning to the status screen, as it feels natural to power off at game over and you'd lose your progress before
• Change corners of SELECT tiles from color 2 to color 1 (lighter) to match START tiles
• Add DAS (delayed auto shift) to left/right cursor movement on status screen
• Fix a single frame visual glitch at the end of the bootup logo effect

Compo Release

This is the original release for the Game Boy Competition 2021.