title: Turn dictionary into csv
body: <pre><code>var dict = {
    'Type1':'.typ1',
    'Type2':'.typ2',
    'Type3':'.typ3'
  }
  </code></pre>
  
  <p>Any chance there's a concise one-liner to produce CSV like following:</p>
  
  <pre><code>".typ1,.typ2,.typ3"
  </code></pre>