React 16.x will deprecate some lifecycle functions that we use as they are unsafe

[Mehuge]

https://reactjs.org/blog/2018/03/27/update-on-async-rendering.html

As of React 16.3, UNSAFE_componentWillMount, UNSAFE_componentWillReceiveProps and UNSAFE_componentWillUpdate will be introduced, then in a 16.x release, the original methods will be deprecated. Then, in React 17, support for the non- UNSAFE_ prefixed versions will be dropped.

This is in preparation for React async rendering.

The above blog post goes into detail about the reasoning behind this and has several examples of when these lifecycle methods might be used and how to update those components to avoid using those methods making them safe to use with async rendering.

There are currently the following counts of references to these methods in the Camelot-Unchained project.

8 componentWillMount
33 componentWillReceiveProps
11 componentWillUpdate