Windows, Linux, macOS and Raspberry Pi 4:
Full Debugger for Master System, Game Gear and SG-1000.
Z80 disassembler with breakpoints and debug symbols.
TMS9918 inspector, including pattern tables, name tables, sprites and palettes.
Memory Editor.
Open rom using cli argument.
Libretro:
Emulation parameters like region, system, mapper, etc.
All platforms:
Load gamepad mappings from file.
Several bug fixes.