v1.6: Better information!

I've just put out version 1.6, which contains improvements to how the game shows you information, along with simple sound effects!
Here's a changelog:

• The tooltip for materials now shows both the real and projected changes
• Factories that cannot produce at full capacity due to being starved of materials now highlight this by turning the number of the material with a shortage red, along with their output number
• Materials that aren't producing at projected amounts due to a starved factory now turn their amount red
• Buttons now make sounds when pressed and released (these sounds also play when using the mouse wheel)

I'd like to specifically thank Arluc Games, who suggested the sound effects, and also streamed a bit of the game, which inspired me to improve the tooltips due to some confusion they faced.