title: Redux-form: update/change two fields values at once
body: <p>I would like to change two fields values of a form at once in Redux-Form.
  There exists a change method, but it allows change only one field. 
  Is there any way how to change more then one field value at once, please?</p>
  
  <p>Ex. </p>
  
  <pre><code>Fields:
    - patternType
    - color
  </code></pre>
  
  <p>I would like to set both fields at once.</p>