Update notes for March 23

Here's an incomplete list of changes in no particular order:

-Fixed getting no shadows at all (instead of just worse shadows) on Low and Medium -Fixed an issue in the second section of Caves where you could reliably fall through the floor on a patch of ground near the air vent you're supposed to put the boulder into -Fixed an issue where you could spawn inside the ground in the very last level -Increased physics substepping to hopefully improve physics stability in low-fps situations -Fixed an issue where on ultrawide displays and with the FOV set high, the sky would appear black near the edges of the screen -Fixed a cosmetic issue where the ball appeared to end up on top of the orange balls and boulders when you were right up against them (didn't affect physics, but sure was weird) -Build now identifies the Steam Deck and sets specific graphics settings for it (I get 30FPS with these defaults - 60 in puzzles) -All input from all gamepads should now be routed to player 1, allowing you to use an external controller with the Deck without losing the ability to also control the game with the deck itself -Fixed some weirdness here and there in the maps (floating objects, etc) -Changed menus to have larger text, mainly so they'd be more legible on Steam Deck

I have been bad about writing down what I've done so there are other things in here.

Thanks for playing InFlux and Redux, folks! <3