lib/poet/helpers.js
function getTags (poet) {
  return poet.cache.tags || (poet.cache.tags = utils.getTags(getPosts(poet)));
}
function getTags (poet) {
  return poet.cache.tags || (poet.cache.tags = utils.getTags(getPosts(poet)));
}
function getTags ( poet ) { return poet . cache . tags || ( poet . cache . tags = utils . getTags ( getPosts ( poet ) ) ) ; }
Takes a `poet` instance and returns the tags in sorted, array form

@params {Object} poet
@returns {Array}
Takes a poet instance and returns the tags in sorted array form