pub enum Command {
    Output,
    Input,
    Increment,
    Decrement,
    RightShift,
    LeftShift
}

#[derive(Debug)]
pub enum Command {
    Output,
    Input,
    Increment,
    Decrement,
    RightShift,
    LeftShift
}

Add derive(Debug) to Command struct
Add derive(Debug) to Command struct
