Misc functions.
fn readall
fn readall*(path: str): str {
Reads file content into a string.
fn stepify
fn stepify*(val, step: th.fu): th.fu {
Snaps a value to step.
fn maxf
fn maxf*(a, b: th.fu): th.fu {
fn minf
fn minf*(a, b: th.fu): th.fu {