Merge pull request #1 from tomchristie/master

Update from main
Merge pull request #2 from tomchristie/master

Update to latest
Merge pull request #3 from tomchristie/master

Update to latest
add transform_<fieldname> methods to serializers, which basically do the opposite of validate_<fieldname> on a per-field basis.
Add order_by to the AutoFilterSet

`AutoFilterSet` should contains `order_by` set to all by default.
Merge remote-tracking branch 'upstream/master'
small typo correction on ViewSet example code
Merge pull request #1099 from diegoponciano/patch-1

small typo correction on ViewSet example code
Fix error when serializer gets files but no data
Add missing newline at the end of test file
Fix django guardian link
Merge branch 'master' of https://github.com/tomchristie/django-rest-framework
Merge pull request #1097 from mociepka/add_default_order_by_in_filtering

Add order_by to the AutoFilterSet
Note on '.model' as default only, with 'serializer_class', and 'queryset' attributes prefered.  Closes #1100
Merge branch 'master' of https://github.com/tomchristie/django-rest-framework
Let JSONEncoder handle Numpy data types.

json.JSONEncoder cannot serialize Numpy data types. Numpy arrays
and array scalars have a tolist() method which casts the object to
a standard python data type.
Try a more localised fix to the data=None problem
Merge remote-tracking branch 'upstream/master'
Typo in strings referring to Python package, django-filter.

On skip of django_filters related unit-tests the reason given states the Python package 'django-filters' is not install.

However, the Python package required to run django_filters related tests is 'django-filter'.
Merge pull request #1108 from rbose85/master

Typo in strings referring to Python package, django-filter.