Allow specifying attributes of generated anchor tags, not just list items in HTML render

[akiva]

It would be extremely beneficial if we could declare an attributes hash for the generated anchor tags themselves, in addition to the list items (as the API currently allows). I have worked on a few apps where this would have been very helpful for assigning additional ID or CLASS values (or html5-data, etc) on the link itself rather than the parent list item.

[akiva]

Ignore me. Clearly I am an idiot who does not RTFFAQ. :)