v0.3.4

Some UX feedback, in no particular order:

• The only way to toggle the UI is with H on the keyboard, and left-clicking the mouse is the primary way of interacting with the game, yet right-click and middle-click both do nothing. FYI, middle-click is the default UI toggle in Ren'Py games.
• I regularly click outside of a shop window by accident when I was intending to change a tab. My mouse accuracy is normally fine, but this tends to happen when I'm switching rapidly between a bunch of different shops right after a Big Smash.
• If I look at the cost of an upgrade I can't afford, I often have to close the window in order to see how much of that resource I have and whether it's worth trying to wait for it.
• There's no feedback on Buy Max that tells me whether it actually bought anything, whether it can buy anything, or how much it just bought. I logically understand that I'm getting more upgrades, but without the game specifically giving me feedback for clicking Buy Max, it loses some of  that "numbers-go-up" satisfaction.
• Fast clicking when playing actively is not great for my RSI. Can we get a hold-to-autoclick option? This could also help with the Buy Max button right after executing a Big Smash. Just please don't make it part of the progression, that would defeat the point.
• Using the keyboard number row to switch between shops doesn't scroll the icon row.
• The icon row can't be scrolled with the mouse wheel.