Deprecation of .simulate()

Hello! Big fan of enzyme here.

I use Enzyme a lot for unit testing and I've noticed recently that people are consistently recommending people use instance prop functions versus using the simulate behavior provided by Enzyme because of the bad implementation.

Is there anyway we could get the docs updated with what the preferred solution is? It's not really clear as the docs stand right now.

Can we also add a note that there are plans to deprecate it Enzyme v4 too? I saw that in the comments and I was surprised by it. I'm more than happy to put in a PR if that is the preferred solution.

Cheers.