--------------------
- Added the ``io`` module so that DataFrames can be created from any
queryset so you don't need to to add a ``DataFrame manager`` to your
models. This is good for working with legacy projects.
- added a Boolean ``verbose`` argument to all methods (which defaults to ``True``)
This populate the DataFrame columns with the human readable versions of
foreign key or choice fields.
- Improved the performance DataFrame creation by removing dependency on
``np.core.records.fromrecords``
- Loads of bug fixes, more tests and improved coverage and better
documentation