The listing, Muffin Knight - Steam key has ended.
Controller
It’s now easier to configure your controller inputs (both in main menu and during gameplay)
Added Controller presets for Xbox, Logitech and generic controllers
Graphics
You can now choose the graphics quality
High also includes AntiAliasing
If you ever have trouble and want to reset some settings, hold Alt when first launching the game in Steam
Multiplayer
Simplified Multiplayer matchmaking: Servers are searched automatically. If none is found, a new one is created for the user.
Open for multiplayer game toggle: You can play single player games while waiting to find a CO-OP multiplayer match. If a match is found, you jump out of single player automatically.
Added friend only/public matchmaking toggle to the options menu