Mesen v2.1.1 is released. Mesen is a multi-system emulator (NES, SNES, Game Boy, Game Boy Advance, PC Engine, SMS/Game Gear, WonderSwan) for Windows, Linux and macOS.

Mesen Changelog:
GBA: Several accuracy improvements (based on test roms)
GBC: Fixed broken menu graphics in NASCAR 2000
NES: Minor accuracy improvements for rare/unlikely edge cases (based on test roms)
NES: Fixed some issues with the Rainbow mapper implementation
NES: Fixed freeze in Mighty Bomb Jack's original release (mapper 185)
NES: Fixed NSF file playback in a rare scenario that caused no audio to be played
NES: Added support for mapper 552 (fixed version of mapper 82)
PCE: CD-ROM - Added support for CD+G disc playback
PCE: CD-ROM - Fixed freeze in intro sequence in Hyper Dyne Sidearms Special
PCE: CD-ROM - Fixed broken intro sequence in Princess Maker 1 and 2
PCE: Minor CPU accuracy fixes/improvements
SNES: Added support for homebrew SNES rumble controller
WS: Minor accuracy improvements (based on test roms)
Linux: Fixed crash on startup for some systems when using Wayland
Linux: Fixed freeze on some systems when closing debugger tools
Linux/macOS: Fixed crash when SDL2 is not found (display an error message instead)
Misc: Disabled log output to console (use --enableStdout to manually enable this behavior)

Download: Mesen v2.1.1
Source:Here