Run rustfmt on the code.

examples/alternate_screen_raw.rs

examples/async.rs

examples/click.rs

examples/commie.rs

examples/keys.rs

examples/mouse.rs

examples/rainbow.rs

examples/rustc_fun.rs

examples/simple.rs

src/async.rs

src/color.rs

src/cursor.rs

src/event.rs

src/input.rs

src/raw.rs

src/screen.rs

src/style.rs

src/termios.rs

src/tty.rs