for real this time

I was hoping to release this update for Nintendo Switch as well as PC, but that fell apart.

Price has been bumped up to $5.00 because I need money and the game should be decent now.

Changelog:

• Controls simplified (old controls available in options)
• Challenge mode replaced with E2-style local multiplayer
• Shaders optimised
• Various bugfixes and optimisations in code and structure
• Map changes