Esty8nine offered me some great feedback that I've incorporated into this update. Thanks Esty!

Adjustments

• You now only have one chance to collect an enemy's coins (unless they are killed by a meteor or some other act of god).  Packaged with some of the other changes, this should give coin collecting a higher risk/reward factor while minimizing tedium.
• Enemies drop more coins
• Coins eject from dead enemies faster and more erratically.
• Thorns no longer knock you back.
• The Slash Attack is less wonky.
• The boss is invulnerable for longer after being hit.
• Minor changes to the boss fight.
• Minor changes to some sounds.

Bugfixes

• Dying while in a turbo jump will no longer make you fall through the floor.
• Fixed a bug that could hurt the player after respawning if they died while falling.
• Fixed some sounds being cut off early.
• The stone from the Stone Throw ability won't be pushed out of safe zones anymore.
• Removed some debug stuff you probably didn't notice anyway.

Oh, and this is out on Steam in a couple days. I'll make sure everyone who purchased on itch receives a Steam key.