Refactored highest sword, shield, and mail counting
Refactored how heart pieces, heart containers, and crystals are counted
Moved quickswap lock bit to high byte of InventoryTracking
Fixed sword and shield item downgrade
Added PreFluteLocations counter
Changes to save.asm and fileselect.asm to account for new WRAM buffer at
$7F6000 saved at $700500, length $1000.
Moves and additions noted at bottom of sram.asm, to be removed later.