Asynchronous Rendering

[LPGhatguy]

Sometimes, complicated trees result in lots and lots of re-renders.

I'd like to reduce the amount of work that Roact does by batching it and making rendering asynchronous, like React does!

Dan Abramov recently posted a good comment as to why React's setState is asynchronous, a change we'll eventually have to make: facebook/react#11527 (comment)

[LPGhatguy]

#48 could include laying the groundwork for this.

[LPGhatguy]

The React team posted an update including new async-friendly lifecycle hooks.

https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html

[LPGhatguy]

This should be implemented by checking for components to re-render using BindToRenderStep with RenderPriority.Last.