message: Re-add docs for clipboard
diff: @@ -3,7 +3,8 @@ pub use iced_native::clipboard::Action;
  use crate::command::{self, Command};
  -#[allow(missing_docs)]
  +/// A buffer for short-term storage and transfer within and between
  +/// applications.
  #[allow(missing_debug_implementations)]
  pub struct Clipboard {
  state: State,
  