Add a "class free" setup

[wavebeem]

When you control the markup, I prefer to add classes manually for styling. But sometimes (e.g. CMS, 3rd party site), you can't do this.

There should be an alternative way to style all (most?) things.

So instead of like:

<button class="bit-button">...</button>
<a class="bit-link" href="...">...</a>

You could do:

<div class="bit-auto">
  <button>...</button>
  <a href="...">...</a>
</div>

I think this could apply to most classes in 1bit-ui, but I would want to first make a list of classes and what semantic element they would correspond to.