anchor.diff:                      "display_name": "Boring Looking Galaxies",
                       "metadata": {
                           "category": "things"
  -                    },
  -                    "retirement": {
  -                        "criteria": "classification_count"
                       },
                       "created_at": "2014-02-13T10:11:34Z",
                       "updated_at": "2014-02-13T10:11:34Z",
  
positive.code: - pairwise
  - grouped
  - prioritized
  - primary_language
  - workflow_version
  - content_language
  
negative.code: ### Create a Workflow [POST]
  Requires a set of *tasks*, a *primary_language*, a *display_name*, and a
  link to a *project*. Can optionally set cellect parameters *grouped*,
  *prioritized*, and *pairwise* (all false by default) and links to
  *subject_sets*.
  
  A SubjectSet that already belongs to another workflow will be
  duplicated when it is linked.
  
  A Workflow may also include a _retirement_ object with a
  _criteria_ key and an _options_ key. _criteria_ describes the strategy
  Panoptes will use to decide when to retire subjects. Currently, this
  may only be 'classification\_count' which retires subjects after a
  target number of classifications are reached. _options_ describes the
  parameters for the strategy. The 'classification\_count' strategy
  accepts _count_ as an option with an integer number of classifications
  for each subject. If _retirement_ is left blank Panoptes defaults to
  the 'classification\_count' strategy with 15 classifications per subject.
  
  + Request
  
  