This patch is full of quality of life improvements and bug fixes. It's the first patch in 5 years! This is more or less the same version as the Nintendo Switch release. But because that port took a while, I lost track of everything I did. So I'll just give you the highlights.
Full controller support and better rebind menus


Yep, from the start of the game to the end, a keyboard is no longer necessary. You can rebind stuff easier in game too. There are also some control options depending on how you want to play, like twin-stick controls or the classic control type. This was broken for way too long, I'm sorry! But it's fixed now. After 8 years? This game is almost 8 years old...
Completion icons for the level select

You can quickly see if you perfected or beat a level at all with a character.
...That's it?! Well, without getting into the details, it should have better compatibility and perform better. I've heard it's better on the Steam Deck! You won't need any custom control layouts or anything. Naturally, some things may be broken now. Let me know what you think.