Method change

src/drawer.rs:140–147

(&mut self, props: Self::Properties)

    }

    fn change(&mut self, props: Self::Properties) -> bool {
        if self.props != props {
            self.props = props;
            true
        } else {
            false
        }
    }

    fn view(&self) -> Html {
        // hasHeader?=self.props.has_header