title: YAML front matter for Jekyll and nested lists
body: <p>I have a set of nested yaml lists with something like the following:</p>
  
  <pre><code>title: the example
  image: link.jpg
  products:
   - top-level: Product One
     arbitrary: Value
     nested-products:
      - nested: Associated Product
        sub-arbitrary: Associated Value
   - top-level: Product Two
     arbitrary: Value
   - top-level: Product Three
     arbitrary: Value
  </code></pre>
  
  <p>I can loop through the products with no problem using <code>for item in page.products</code> and I can use a logic operator to determine if nested products exist - what I CAN'T do is loop through multiple <code>nested-products</code> per iteration of <code>top-level</code></p>
  
  <p>I have tried using <code>for subitem in item</code> and other options - but I can't get it to work - any ideas?</p>