osu! Mode and more improvements

Version 18091900

- More osu! mode improvements (isn't finished yet, but is playable)

- Catch mode now is main mode 

- Shaders option

- Cursor

- Removed some naughty glitches 

- "Minor changes"

Pending

- Beatmap downloader (It'll avaiable on next versions)

- Replay in osu! mode

- Make all beautiful 

A letter from my code monkey (me)

Well, I try to code as fast as possible in my free time, but, I have an old laptop (Athlon II, P360), and debugging this game is a lot of pain.

Anyway, thank you for playing kyun! ❤

See ya!