index.js
function sentiment(options) {
  return transformer

  function transformer(node) {
    var concatenate = concatenateFactory()

    visit(node, any(options))
    visit(node, concatenate)

    concatenate.done()
  }
}
function sentiment(options) {
  return transformer

  function transformer(node) {
    var concatenate = concatenateFactory()

    visit(node, any(options))
    visit(node, concatenate)

    concatenate.done()
  }
}
Patch `polarity` and `valence` properties on nodes with a value and word-nodes.  Then, patch the same properties on their parents.