title: Using immutability-helper in React, update multiple values in one pass
body: <p>Can you update two or more values in a nested state using one update method call from immutability-helper?</p>
  <p>I tried the code below but only the last line <code>[elementIndex]: {fouls: {$set: 1 }}</code> gets implemented.</p>
  <pre><code>this.state={
      players:[{points: 0, fouls: 0, name: 'bob'}, {points: 0, fouls: 0, name: 'joe'}]
  }
  
  const element = this.state.players.findIndex(el =&gt; el.name === 'bob');
  
  let score = update(this.state.players, {
        [element]: {points: {$set: 2 }},
        [element]: {fouls: {$set: 1 }}
      });
  
  this.setState({ players: score})
  </code></pre>