Remove hardcoded chunk lengths array
Remove cached chunk index array
Handle new-game files correctly (all blocks present check).
Consistently call things sector instead of chunk or block.
Somehow there was a bug with my FRLG save file's box data, which now loads completely?? Neat
reduces loading time (don't have to allocate conversion arrays when
launching a gen7 game), and separates things to easier to manage
locations
reworks gen3 string encode/decode, no longer does 3->4->5 and 5->4->3;
instead goes straight to the end result without an intermediary format.
String sanitization should probably be broken up rather than reused, oh
well.
