Added
* object Cache-Control metadata is now able to be overridden ([7](https://github.com/eldarion/django-gapc-storage/pull/7))
* existing objects can now be overwritten on save ([8](https://github.com/eldarion/django-gapc-storage/pull/8))
* documentation has been provided for settings ([9](https://github.com/eldarion/django-gapc-storage/pull/9))
Changed
* Backwards Incompatible: Changes in [8](https://github.com/eldarion/django-gapc-storage/pull/8) require Django 1.8. To continue using the project with Django<1.8, see a workaround documented in [10](https://github.com/eldarion/django-gapc-storage/issues/10)