Support for fragments

[i-like-robots]

• https://reactjs.org/docs/fragments.html#short-syntax
• https://github.com/babel/babel/blob/master/packages/babel-plugin-transform-react-jsx/README.md#fragments

<>
  <td>Hello</td>
  <td>World</td>
</>

Looks like the module needs to support rendering children of null elements.