Added different high scores for each difficulty level. Fixed a bug where bonus balls weren't spawning
made it so the bg music only plays after the start button is pressed on EVERY level
some more help dialogue for FF
kinda forgot I was running version control so there are a lot of changes
firstly, high score and unlock progress should now be saved correctly
secondly, the player ball's rotation is no longer affected by colliding with other balls
fixed the bomb sound so that it's not 3d anymore. Added a sound effect for getting hit by a bad ball