* Update ``DepartureService`` object to contain a reference to its ``Itinerary``
0.1.26
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* Normalize API request headers, to promote caching.
0.1.25
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* Added ``ActivityDossier`` and ``AccommodationDossier`` resources, as well as references to it from ``Activity`` and ``Accommodation``.
0.1.24
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* Added ``PlaceDossier`` resource, as well as reference to it from ``Place``
0.1.22
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* Added ``advertised_departures`` to ``TourDossier``
0.1.21
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* Fixed a bug with promotions on a Price object. When promotions were accessed, gapipy would query for all promotions, rather than returning the inline list.