title: Conditionally selecting rows based on order
body: <p>I have a table with columns <code>score</code> and <code>timestamp</code>. I need to select each row that <code>score</code> is a new high, when sorted by <code>timestamp</code> (bold rows):</p>
  <div class="s-table-container">
  <table class="s-table">
  <thead>
  <tr>
  <th>score</th>
  <th>timestamp</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td><strong>6</strong></td>
  <td>1</td>
  </tr>
  <tr>
  <td>3</td>
  <td>2</td>
  </tr>
  <tr>
  <td>3</td>
  <td>3</td>
  </tr>
  <tr>
  <td>5</td>
  <td>4</td>
  </tr>
  <tr>
  <td><strong>7</strong></td>
  <td>5</td>
  </tr>
  <tr>
  <td><strong>10</strong></td>
  <td>6</td>
  </tr>
  <tr>
  <td>8</td>
  <td>7</td>
  </tr>
  <tr>
  <td>9</td>
  <td>8</td>
  </tr>
  <tr>
  <td>10</td>
  <td>9</td>
  </tr>
  <tr>
  <td><strong>11</strong></td>
  <td>10</td>
  </tr>
  </tbody>
  </table>
  </div>