anchor.diff:  
   # house_tree
   - areas (array)
  -    - (house_single)
  +        - (house_single)
       - (object)
           - id: kitchen
           - image_url: kitchen.svg
  
positive.code:         - position
              - x: 50 (number)
              - y: 50 (number)
          - size (object)
              - width: 100 (number)
              - height: 50 (number)
      - (object)
  
negative.code: 
  ## Area Events [/v1/areas/{id}/events{?from,to}]
  
  Return abbreviated event info for an area.
  
  + Parameters
      - id: house (string) - area guid
      - from: `2015-11-21@17:54` (string) - lower bound
      - to: `2015-11-31@17:54` (string) - upper bound
  
  + Attributes
      - events (array)
  