Add babel plugin that pre-renders React VDOM as much as possible.
Add babel plugin that pre-renders React VDOM as much as possible.

In particular, it does the following:

- any strings that we know will always be rendered the same are rendered at
  build time
- JSX is no longer transformed to `React.createElement`, but is instead
  transformed to a simpler data-structure that is 1) appropriate for SSR, and
  2) faster to traverse (because no new objects are constructed)
- attrs are rendered if possible, otherwise transformed into render-friendly
  data-structures as well.

FormidableLabs/rapscallion,fleg/rapscallion,fleg/rapscallion,FormidableLabs/rapscallion