title: Merge objects in a loop
body: <p>I have this array of arrays of objects :</p>
  <pre><code>[
    [
      {a: 'FER', b: 'MEN', c: 'TUM'},
      {a: 'RIS ', b: 'US', c: 'SOU'}, 
      {a: 'CON', b: 'SEC', c: 'TETUR'}
    ],
    [
      {d: 'LIGU'}, 
      {d: 'GU'}, 
      {d: 'LA'}
    ],
    [
      {e: 'UL', f: 'LAM'},
      {e: 'COR', f: 'PER'},
      {e: 'EGE', f: 'STAS'}
    ]
  ]
  </code></pre>
  <p>What I want to obtain in the more generic manner is this (in reality, I have one array of 21 arrays with 205 objects in each):</p>
  <pre><code>[
    {a: 'FER', b: 'MEN', c: 'TUM', d: 'LIGU', e: 'UL', f: 'LAM'},
    {a: 'RIS ', b: 'US', c: 'SOU', d: 'GU', e: 'COR', f: 'PER'},
    {a: 'CON', b: 'SEC', c: 'TETUR', d: 'LA', e: 'EGE', f: 'STAS'}
  ]
  </code></pre>
  <p>I tried so many things (object assign, reduce, etc.) but my head is a mess right now and I'm stuck on how I can merge objects in a loop.
  Any help so much appreciated!</p>