-------------------
* Add optional ``headers`` parameter to Query.get to allow HTTP-Headers to be
passed. e.g. ``client.<resource>.get(1234, headers={'A':'a'})``. See
`PR 91`_.
* Add ``preferred_display_name`` field to ``Agency`` resource. See `PR 92`_.
* Add ``booking_companies`` array field to all Product-type resources. See
`PR 93`_.
* Accommodation
* Activity
* AgencyChain
* Departure
* SingleSupplement
* TourDossier
* Transport
.. _`PR 91`: https://github.com/gadventures/gapipy/pull/91
.. _`PR 92`: https://github.com/gadventures/gapipy/pull/92
.. _`PR 93`: https://github.com/gadventures/gapipy/pull/93