v0.10 - Tutorial Mode

Version 0.10 adds 20 tutorial puzzles to help new players learn the main mechanics.

I added a links page to the options menu, linking to the discord server, the highscore sheet, the devlog / patch notes here on itch.io, and to Tritris the game which inspired this one.

I made the score splits option in the menu a bit better. There's still the option for a score breakdown, but now you can see what your score was at each of the speeds.

I also fixed a bug with the rotation system where holding a rotation key then holding a movement key would cause your rotation charge to oscillate every frame. Fixing this exposed another bug where rotations can be buffered in cases where they shouldn't be allowed to at high speeds and I'm currently working on it, but it's a very rare thing that might be frame perfect.

And I fixed the negative timer bug from the last version.