Djangorestframework-gis

---------------------------

- `87 <https://github.com/openwisp/django-rest-framework-gis/issues/87>`_ dropped support for old django versions and python 2.6

--------------------------

- `82 <https://github.com/openwisp/django-rest-framework-gis/issues/82>`_: avoid ``KeyError`` id field not in ``fields`` (bug introduced in 0.9.5)
- `fbaf9b1 <https://github.com/openwisp/django-rest-framework-gis/commit/fbaf9b1>`_: improved documentation for new default ``id_field`` behaviour
- `84 <https://github.com/openwisp/django-rest-framework-gis/pull/84>`_: switched to ``assertAlmostEqual`` in ``test_post_location_list_EWKT`` to ease testing for debian package
- `85 <https://github.com/openwisp/django-rest-framework-gis/pull/85>`_: fixed serialization of properties holding ``None`` values (bug introduced in 0.9.5)
- `86 <https://github.com/openwisp/django-rest-framework-gis/pull/86>`_: updated advertised compatibility to include **python 3.5**

--------------------------

- `71 <https://github.com/openwisp/django-rest-framework-gis/pull/71>`_: added possibility to override GeoJSON properties in ``GeoFeatureModelSerializer``
- `52e15a5 <https://github.com/openwisp/django-rest-framework-gis/commit/52e15a5>`_: Added default ``page_size_query_param`` in ``GeoJsonPagination``

--------------------------

- `68 <https://github.com/openwisp/django-rest-framework-gis/issues/68>`_: ensure not having drf-gis in ``INSTALLED_APPS`` works anyway
- `76 <https://github.com/openwisp/django-rest-framework-gis/issues/76>`_: avoid pickle errors in ``GeoJsonDict``
- `75 <https://github.com/openwisp/django-rest-framework-gis/pull/75>`_: return ``GEOSGeometry`` instead of geojson property

--------------------------

- `04fd1bf <https://github.com/openwisp/django-rest-framework-gis/commit/04fd1bf>`_: Added ``GeoJsonPagination``
- `fe47d86 <https://github.com/openwisp/django-rest-framework-gis/commit/fe47d86>`_: Improved ``ValidationError`` message of ``GeometryField``
- `a3ddd3d <https://github.com/openwisp/django-rest-framework-gis/commit/a3ddd3d>`_: **Improved serialization performance between 25% and 29%**
- `fb6ed36 <https://github.com/openwisp/django-rest-framework-gis/commit/fb6ed36>`_: ``GeoModelSerializer`` deprecated because obsolete
- `66 <https://github.com/openwisp/django-rest-framework-gis/pull/66>`_: geometry now allows ``None`` values according to the **GeoJSON spec**
- `67 <https://github.com/openwisp/django-rest-framework-gis/pull/67>`_: discern ``False`` or empty string values from ``None`` in ``GeoFeatureModelSerializer``

--------------------------

- `59 <https://github.com/openwisp/django-rest-framework-gis/pull/59>`_: Added GeometrySerializerMethodField
- `3fa2354 <https://github.com/openwisp/django-rest-framework-gis/commit/3fa2354>`_: removed broken/obsolete/untested code