convenience methods for span

src/bin/test/main.rs

@@ -64,7 +64,7 @@ impl DefaultAppState for Client {
                 let child = image(include_bytes!("assets/sungals.png"))
                     .center()
                     .add_strong(ctx);
-                span_add(ctx).children.push(child);
+                span_add(ctx).push(child);
             })
             .sized((150, 150))
             .align(Align::BOT_RIGHT);
@@ -72,7 +72,7 @@ impl DefaultAppState for Client {
         let del_button = rect(Color::RED)
             .radius(30)
             .on(CursorSense::click(), move |ctx| {
-                span_add(ctx).children.pop();
+                span_add(ctx).pop();
             })
             .sized((150, 150))
             .align(Align::BOT_LEFT);
@@ -121,7 +121,7 @@ impl DefaultAppState for Client {
                 let msg_box = text
                     .background(rect(Color::WHITE.darker(0.5)))
                     .add_strong(ctx);
-                texts(ctx).children.push(msg_box);
+                texts(ctx).push(msg_box);
             })
             .add(&mut rsc);
         let text_edit_scroll = (