Some Additions for consideration.

[nmn]

Added:

• VanillaJS version for implementing transferring props with ES6 and helper functions (not waiting for rest operator to be supported on object properties)
• An edit on Primitives, so the render method takes the props as an argument and is consistent with Core
• Added a point on Layout Components to mention a feature to be added to Chrome soon, that should considered
• Wrote a section explaining some of the downsides with Inline Styles