gating constructors</td>
      <td><a href="https://wg21.link/n1986">N1986</a></td>
      <td class="full" align="center">Clang 3.0</td>
    </tr>
    <tr>
      <td rowspan="2">Inheriting constructors</td>
      <td><a href="https://wg21.link/n2540">N2540</a></td>
      <td class="full" align="center">Clang 3.3</td>
    </tr>
      <tr>
        <!-- from Kona 2015 -->
        <td><a href="https://wg21.link/p0136r1">P0136R1</a> (<a href="#dr">DR</a>)</td>
        <td class="full" align="center">Clang 3.9</t