How to blog
===========

If a code block is in a list item like:
```
1. This is a list item with source:
   ```
   source
   ```
```

Do not use the above, but instead, use:
```
1. This is a list item with source:
   <pre class="fullwidth"><code>
   source
   </code></pre>
```

If you want a code block w/ line numbers, it can only be done at the
parent level via:
```
  ``` { .shell .showlines }
  some lines
  ````
```