ng 3.6</td>
    </tr>
    <tr>
      <td>Nested namespace definition</td>
      <td><a href="https://wg21.link/n4230">N4230</a></td>
      <td class="full" align="center">Clang 3.6</td>
    </tr>
    <tr>
      <td>Attributes for namespaces and enumerators</td>
      <td><a href="https://wg21.link/n4266">N4266</a></td>
      <td class="full" align="center">Clang 3.6</td>
    </tr>
    <tr>
      <td>Allow constant evaluation for all non-type template arguments</td>
      <td><a href="https://wg21.link/n4268