Adam Barth 77bc162f7d Stacked does not repaint when its position changes
We were marking the parent *Widget's* render object as needing layout, but
we actually need to walk up the component tree until we find the parent
*RenderObjectWrapper* so we can mark actually mark the parent render object as
needing layout.

Fixes #408
2015-07-31 10:06:44 -07:00
..
2015-07-30 14:47:12 -07:00