* Added a delete method for the user_api
* Added a password strength verification
* Allow the registration of a user to include a desired password
* Raised validation errors instead of value errors
* Added a 404 error handler to return a json APIMessage alongside the 404
* Fixed datetime deserializer
* Changed patch functionality to be the intersection of passed in keys and attributes from the model
* This prevents None attributes on patch model from being set on the original model, unless a null was passed in with the key for that attribute
* Nullable field validators need to be automatically generated on the model
* Updated tests to accommodate changes
* Added iso8601 library to handle parsing incoming rfc3339 datetimes
Drew Short