StrictMode warnings for unsafe lifecycle methods

[rares-lupascu]

Be sure to search for your issue before opening a new one.

Current Behavior

Warning: Unsafe lifecycle methods were found within a strict-mode tree:
    in StrictMode (at src/index.tsx:54)

componentWillReceiveProps: Please update the following components to use static getDerivedStateFromProps instead: Player

componentWillUpdate: Please update the following components to use componentDidUpdate instead: ReactPlayer

Expected Behavior

No warning :)

Steps to Reproduce

1. Add the player under <React.StrictMode>

Environment

• URL attempting to play: n/a
• Browser: n/a
• Operating system: n/a
• jsFiddle example: no need

Other Information

n/a

[jaytula]

I've created a pull request #692 implement the two instances of componentWillUpdate as componentDidUpdate.