React Utils - v1.0.2

Add getShallowDiffs utility

This update adds getShallowDiffs, a utility to help spot the differences between
prev/next props. This is handy when trying to figure out why a React component
has updated, by tapping into lifecycle hooks, such as componentDidUpdate.

Example

import React from 'react'
import getShallowDiffs from '@helpscout/react-utils/dist/getShallowDiffs'

class Napolean extends React.Component {
  ...
  componentDidUpdate (prevProps) {
    console.log(getShallowDiffs(prevProps, this.props))
    // {
    //   diffs: ['propName'],
    //   previous: { propName: 'a' },
    //   next: { propName: 'b' },
    // }
  }
  ...
}