0.6.0

• Update scan and chunking interface to handle dict with multiple items
  instead of list of dicts.

.. warning::
This is a breaking change compared to version 0.5.0, but all users are
reccomended to upgrade to this version. This version represents an
improvement on the previous iteration where instead of handling a list of
dicts, we now handle a single dict with mulitple entries. This simplifies
the library code and makes the interface much more usable.

The previous version of the SDK required users to pass in a list of dicts. 
We now require users to pass in a single dict with multiple entries. 
``nightfall.scan([{'id': 'string}])`` should now be 
``nightfall.scan({'id': 'string'})``.