Refactor song and note structs to not use bitfields, but manually read/write the correct bits from the data byte arrays. This fixes audio on the Wii U (and potential future Big Endian platforms)
Increase audio volume by removing bit shifting that was intended to reduce clipping, but doesn't appear to be helping
Turn off logger by default (stop unnecessary disc I/O)
Only write cartdata file on cart closure to avoid pauses mid game