* TODOS

** DONE Should menu use index or just the exercise?
** ALMOSTDONE State should have a more concise API, rather than exposing .0
** WONTFIX Abstract keyboard event handling into actions
** DONE Internal state tracking in tester (not just mutable variables)?
** DONE Input -> tester -> input abstraction: would a tuple suffice?
** DONE Refactor output clearing to function
** DONE clap
** DONE replace RustEmbed with something that actually works: should be able to exclude target folders https://github.com/pyrossh/rust-embed/issues/150
** TODO update documentation
** TODO add confirmation dialog
** TODO create abstraction for \r\n and use MoveToNextLine instead
#+BEGIN_SRC rust
for line in MENU.split('\n') {
    queue!(w, style::Print(line), cursor::MoveToNextLine(1))?;
}
#+END_SRC
** TODO show warnings (and clippy)