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   0.3.2 - July 17, 2016
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This release is a beta - save states, movies, etc. created with this version may not be compatible with future versions of Mesen.
New Features
    -Compatibility: Added support for 20 new mappers (28, 31, 40, 42, 46, 48, 50, 56, 132, 133, 142, 170, 171, 172, 173, 175, 177, 179, 182, 252)
    -Input: DirectInput controllers/joysticks (e.g: PS4 controller, etc.) are now supported.
    -Overclocking: Added a lag counter like the one present in FCEUX and puNES.
    -Sunsoft 4: Improved compatibility for this mapper.
Bug Fixes
    -Audio: Fixed a bug in the square channel's sweep units - fixes audio distortion in some games.
    -Open Bus: Improved open bus implementation.
    -VS System: Fixed a palette bug that could occur after loading VS System games.
    -VRC4: Fixed a bug that was causing TMNT2 (J) to crash.
http://www.mesen.ca/index.php#Downloads