Method refresh

tests/test_query.py:325–327

(self, *, repaint=None, layout=None, recompose=None)

    class MyWidget(Widget):
        def refresh(self, *, repaint=None, layout=None, recompose=None):
            super().refresh(repaint=repaint, layout=layout)
            refreshes.append((repaint, layout))

    class MyApp(App):
        def compose(self):