Feature request: Classes for code blocks

[TethysSvensson]

Would it be possible to add classes to code blocks as well?

Currently when I try this:

{:.foo}
```
test
```

It will result in this html:

<div class="foo">
</div>
<pre><code>test
</code></pre>

[pkaminski]

@dhbradshaw, what do you think?

[dhbradshaw]

@pkaminski : that makes sense.

@TethysSvensson That makes sense. Are you open to creating a pr?

[TethysSvensson]

I principle yes, but I have a bit too much on my plate right now.

For now I solved my problem by writing CSS that hides the div.foo object and applies some styling to the pre block that comes after the div.foo.