Sega Genesis / Sega CD / SNES / Master System / Game Gear emulator -
Most of the changes from v0.11 are related to video filtering options for everything, and developer debug tools for Genesis and add-ons.
TV-based consoles now support an NTSC composite video filter that attempts to be much more authentic than the existing simple blur shaders, and all consoles now support xBRZ and MMPX upscaling filters. There are several other video shader/filtering changes noted below in the full changelog.
Genesis / Sega CD / 32X now support some basic CPU debugging tools in the form of disassembly views, CPU register views, read/write/execute breakpoints, and step-by-instruction. There are also new register views for the two Genesis sound chips and more information in the color palette views.
OpenGL is no longer supported as a graphics backend, only Vulkan and DirectX 12. Some of the new video filtering code uses graphics backend features that are not supported in OpenGL, and I decided to remove support rather than maintain an alternate code path solely for GL compatibility.
Save states are not compatible with previous versions for most systems.

