Enum Modifier

src/lib.rs:28–33

#[repr(u8)]
#[derive(PartialEq, Eq, Hash, Copy, Clone)]
pub enum Modifier {
    Shift = 0,
    Ctrl = 1,
    Alt = 2,
    Gui = 3,
}

const KEYBOARD_STATE_RESERVED_BITS: usize = 5;
const ABORT_BIT: usize = 4;