Implemented header checksum check
Renamed serial.enabled to serial.tostdout
Pave the road for CGB support
More informative error for an invalid checksum
Reset GPU on turn-off instead of turn-on
Fixed bug in MBC1's ram
Added largest ram-size for MBC5
Implemented color for background
Implemented Sprite and window coloring
Added missing 0xFF6B
Some small optimizations
Improved GPU priority system
MMU and GPU bugfixes
Added parameter to force Classic mode
Fixed incorrect determination of pallet number
Finally? fixed sprite-to-bg priority system
Fixed determining if window is enabled
Fixed error in CGB window information
Some GPU refactoring
Removed all dead_code warnings