Use `RendererV2` instead of `Renderer` now. `Renderer` can still be injected and delegates to `RendererV2`. Use `RendererFactoryV2` instead of `RootRenderer`. `RootRenderer` cannot be used anymore. BREAKING CHANGE: - `RootRenderer` cannot be used any more, use `RendererFactoryV2` instead. Note: `Renderer` can still be injected/used, but is deprecated.