Devlog 13 - Geozi

Added function plotting lol. There’s now a f(x) button at the end of the toolbar, you enter a function and press Enter or Plot to draw it.

• Added helpers in the dialog for x, powers, roots, trig functions, ln, exp, π, etc… so you dont have to type everything manually xd
• Curves are purple and Ctrl+Z works with them too
• Invalid expressions just show an error in the bottom left instead of crashing or opening some annoying popup

No implicit multiplication for now so 2x wont work, you gotta write 2*x lol