message: Make DynFunc public
diff: @@ -36,7 +36,7 @@ pub use self::error::Result;
  #[doc(inline)]
  pub use self::import::IsExport;
  #[doc(inline)]
  -pub use self::instance::Instance;
  +pub use self::instance::{Instance, DynFunc};
  #[doc(inline)]
  pub use self::module::Module;
  #[doc(inline)]
  