title: Is there any way to create nested repeatable content in Prismic?
body: <p>My use case is the following:</p>
  
  <p>I have a page with a quiz on it, the quiz has N sections/questions and M possible answers. Both the questions and answers contain multiple fields though (e.g. an image, title and a color for each answer). I'm using a slice and putting the questions in the repeatable area, but you can't have group fields inside the repeatable area.</p>
  
  <p>Any alternative ways of doing that? Wordpress Advanced Custom Fields solves this easily.</p>