a rupl implementation using kalc-lib to calculate data points, expected to be used in kalc
see kalc.rs for a website example(currently does not support changing function like the application does)
last arg will be the functions to be ran in format of kalc, escape opens up functions menu, see kalc for info on parsing and functions, for more information on keybinds see rupl
specifying skia in Cargo.toml instead of egui will make a more minimal backend which is faster but less portable
