Polyfill for ChildNode.remove()

[jackbrown]

Hi @bebraw, I've just run in to some errors with IE. They are a result of IE9+ not implementing ChildNode.remove(). This results in an error being thrown whenever the cleanup() method is called from reactabular-resizable.

There is a polyfill on the MDN docs. Are you happy for it to be implemented in this package? I can help if needed.

[bebraw]

@jackbrown PR welcome. Do you think we can achieve the same without a polyfill?

They did some fix at https://github.com/vismaosscomponents/stylesheet-helpers which might be good to port over as well.

Thanks for the help. 👍