title: Multiple Sections Per Row using IGListKit or UICollectionView
body: <p>I am trying to create a feed layout in this fashion</p>
  
  <pre><code>[-------2/3-------][---1/3---] /* 2 items - 2 thirds and 1 third */
  [---1/3---][-------2/3-------] /* 2 items - 1 third and 2 thirds */
  [-------2/3-------][---1/3---] /* 2 items - 2 thirds and 1 third */
  [---1/3---][-------2/3-------] /* 2 items - 1 third and 2 thirds */
  </code></pre>
  
  <p>I was able to kind of achieve this by doing something like</p>
  
  <pre class="lang-swift prettyprint-override"><code>class FeedSectionController: ListSectionController {
  
      var entry: FeedEntry!
  
      override init() {
          super.init()
          inset = UIEdgeInsets(top: 0, left: 0, bottom: 15, right: 0)
      }
  
      override func numberOfItems() -&gt; Int {
          return 2
      }
  
      override func sizeForItem(at index: Int) -&gt; CGSize {
  
          guard let ctx = collectionContext else { return .zero }
  
          if index == 0 {
              return CGSize(width: ((ctx.containerSize.width / 3) * 2), height: 30)
          } else {
              return CGSize(width: (ctx.containerSize.width / 3), height: 30)
          }
      }
  
      override func cellForItem(at index: Int) -&gt; UICollectionViewCell {
          let cell = UICollectionViewCell()
          cell.backgroundColor = index % 2 == 0 ? .lightGray : .darkGray
  
          return cell
      }
  
      override func didUpdate(to object: Any) {
          entry = object as? FeedEntry
      }
  }
  </code></pre>
  
  <p>However the result is really more like</p>
  
  <pre><code>[-------2/3-------][---1/3---] /* 2 items - 2 thirds and 1 third */
  [-------2/3-------][---1/3---] /* 2 items - 2 thirds and 1 third */
  [-------2/3-------][---1/3---] /* 2 items - 2 thirds and 1 third */
  [-------2/3-------][---1/3---] /* 2 items - 2 thirds and 1 third */
  </code></pre>
  
  <p>Which is not quite right, also it means I have 2 entire feed items per cell, per section.</p>
  
  <p>What I'd like is each section to contain X amount of cells that essentially construct a feed item.</p>
  
  <p>To do this however I need to to layout <code>FeedSectionController</code> in the fashion outlined earlier, not the items within <code>FeedSectionController</code> (I think).</p>