packages feed

pandoc-3.10: test/command/8257.md

```
% pandoc -f markdown -t html5
+------+-------+
| Item | Price |
+======+=======+
| Eggs | 5£    |
+------+-------+
| Spam | 3£    |
+======+=======+
| Sum  | 8£    |
+======+=======+
^D
<table style="width:21%;">
<colgroup>
<col style="width: 9%" />
<col style="width: 11%" />
</colgroup>
<thead>
<tr>
<th>Item</th>
<th>Price</th>
</tr>
</thead>
<tbody>
<tr>
<td>Eggs</td>
<td>5£</td>
</tr>
<tr>
<td>Spam</td>
<td>3£</td>
</tr>
</tbody><tfoot>
<tr>
<td>Sum</td>
<td>8£</td>
</tr>
</tfoot>

</table>
```