Update 0.5.7.4

- Float-positioned cubes should be rounded to it's nearest y (that's inside -1 and 4)
- Add a way to assign keys to long cubes (if you click K, you can spam L, and it won't fail, but releasing K will fail)
- Removed the cube size difficulty system. In 0.6, the size name will be removed in the play screen
- Removed GitHub update checking. Removed itch and GitHub support.
- Bring back a few mods