1.1 update

I made a small post-jam update, 1.1 is the new version and 1.0 is the jam version.

list of changes:

• potion explosions now have sprites under the shader so that the web build is easier to play
• potions now explode on impact instead of at the end of a timer so that it's more fun
• bosses now rotate 1 degree more each cycle so you can't avoid them just by standing still
• all enemies and bosses have more health to make the game harder
• all enemies shoot twice as fast to make the game harder.
• fixed issues with modulation going too far and warping sprites