Add border_width and border_color to Quad

examples/custom_widget.rs

@@ -63,6 +63,8 @@ mod circle {
                     bounds: layout.bounds(),
                     background: Background::Color(Color::BLACK),
                     border_radius: self.radius,
+                    border_width: 0,
+                    border_color: Color::TRANSPARENT,
                 },
                 MouseCursor::OutOfBounds,
             )

examples/tour.rs

@@ -27,7 +27,7 @@ impl Sandbox for Tour {
             scroll: scrollable::State::new(),
             back_button: button::State::new(),
             next_button: button::State::new(),
-            debug: false,
+            debug: true,
         }
     }