- Added all Add, Adc, Sub & Sbc instructions to the decoder.
- Updated the _zero method.
- Added And8Bit, Or8Bit & Xor8Bit abstract classes.
- Added _update_flags() to LoadRegisterARegisterI & LoadRegisterARegisterR instructions.
- Added And, Or, Xor, Cp, Inc & Dec instructions.
- Added And, Or, Xor, Cp, Inc & Dec abstract classes.