Strict Mode compatibility

[gempir]

It would be great to make this library compatible with react strict mode.

https://reactjs.org/docs/strict-mode.html

Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of LazyLoad which is inside StrictMode. Instead, add a ref directly to the element you want to reference. Learn more about using refs safely here: https://reactjs.org/link/strict-mode-find-node

[loktar00]

Working on this currently, adding the enhancement label.

[loktar00]

This should now work with 4.0, fixed in #155