Add MMU r/w of IO ports and hram
Extend debugging
Clean up OP: RLCA
Add OP: JR NZ, n
Add OP: CB
Fix OP: CP, n
Fix OP: RET NC
Fix OP: LDH (n), A
Fix OP: LDH A, (n)
Clean up and add more debug
Restructure
Add correct timing for OP: NOP
Add basic support for LCD STAT and LY
Add gitignore
Fix High RAM memory mapping
Add OP: RET
Add poormans stepping
Cleanup and verboser debug
Allow disabling debug
Add OP: INC/DEC A