RenderGraph now creates graph from edge data, because the referrer is not necessarily be the previous renderer. It also renders iframes.
RenderGraph#neighbors-of
Try implementing #refresh. It should work on CSS now though…
Discovered a bug that renderer cannot detect computed style change.
Fix the bug that computedStyle change cannot be detected by replicating CSSStyleDeclaration objects. This also fixes pseudo element test and RendererGraph test.
Add a failing test for visually invariant test case.