0.13.0

• Allows universal preprocessors or postprocessors; see "Universal processors"
  section of the documentation.
• Allows specifying which primary key to use when creating endpoint URLs.
• Requires SQLAlchemy version 0.8 or greater.
• #17: use Flask's flask.Request.json to parse incoming JSON requests.
• #29: replace custom jsonify_status_code function with built-in support
  for return jsonify(), status_code style return statements (new in Flask
  0.9).
• #51: Use mimerender to render
  dictionaries to JSON format.
• #247: adds support for making POST requests to dictionary-like
  association proxies.
• #249: returns 404 if a search reveals no matching results.
• #254: returns 404 if no related field exists for a request
  with a related field in the URL.
• #256: makes search parameters available to postprocessors for
  GET and PATCH requests that access multiple
  resources.
• #263: Adds Python 3.3 support; drops Python 2.5 support.
• #267: Adds compatibility for legacy Microsoft Internet Explorer versions 8
  and 9.
• #270: allows the query attribute on models to be a callable.
• #282: order responses by primary key if no order is specified.
• #284: catch DataError and ProgrammingError exceptions when bad data
  are sent to the server.
• #286: speed up paginated responses by using optimized count() function.
• #293: allows sqlalchemy.Time fields in JSON responses.