Adds .updated class to .entry-date when needed
return all the things! Also, add display: block; to some empty selectors (to tie in with _sass)
Merge pull request #549 from WebDevStudios/empty_selectors

_s: Wrap after each selector and comma.
Merge branch 'updated-hAtom' of https://github.com/slobodan/_s into slobodan-updated-hAtom
_s: Continue using a default `time` tag.

We only need to change the default markup if published and updated
timestamps are different.
Merge branch 'slobodan-updated-hAtom'