[react-jss] innerRef prop incompatible with React.createRef

[bamaboy]

Expected behavior:
innerRef takes React.createRef() as valid propType.

Describe the bug:
I am using react 16 refs api, and passing ref to styled component. But since React.createRef() returns an object, and component's prop innerRef expected to be function, propTypes warning occurs.

Failed prop type: Invalid prop `innerRef` of type `object` supplied to `Jss(TabPicker)`, expected `function`.

Versions (please complete the following information):

• jss: latest

[kof]

innerRef was designed before createRef api existed. Stay tuned for the version 10 release #795