2.4.0

• Generate globally unique common names for unnamed components, instead of falling back to "Component".

  Unnamed components are now rendered as <UnnamedComponent0>, where 0 is an internal ID. Two identical components (referentially equal) will render with the same name, useful for testing unnamed components.

• Don't assume Function.prototype exists (it doesn't for ES2015 arrow functions)

• Add a renderRootComponent:false option, which skips rendering for components located at the root of the given JSX tree.

  Example:

  render(<Foo>a</Foo>) === '<Foo>a</Foo>'