- 68k: rework Z-flag calc
- 68k: better handling of STOP, restart on exception
- 68k: RESET instruction should only reset external devices
- build: load version from manifest
- dma: fix fill and copy
- emu: basic cheat codes support
- emu: compute checksum and add autofix checksum
- fm: rework timers
- sram: write to file only on close
- ui: default scale set to 2
- vdp: rework rendering engine
- vdp: sprite masking, handle simple case
- vdp: shadow highlight - needs work
- vdp: refactor timings
- z80: fix reset logic