Update docs/who_uses.rst

Added dbpatterns to who uses
Updates setup.py - corrects name of requirement

python-dateutil instead of python_dateutil
Merge pull request #913 from ClearcodeHQ/master

Fixes requirement name
Only save related models if they've changed; closes #397, #594 and others.

Extra tests assuring through model metadata is saved; fixing backwards/forwards incompatability with MockRequest
Ignore the env3 virtualenv.
Backfilled release notes.
Added release notes for v0.9.15.
Bumped version to v0.9.15!
Started v0.9.16-dev.
Merge pull request #812 from fatiherikli/patch-1

Added dbpatterns to the Who Uses docs.
Add (failing) test for unicode support in Resource.method_check
Support unicode HTTP method names in Python 2.x (fixes toastdriven/tastypie#935)
Merge pull request #936 from kennknowles/unicode-upper

Support unicode HTTP method names in Python 2.x
Update docs/paginator.rst with a warning and an example solution, to avoid unnecessary and possibly inefficient database queries; closes #973.
Merge pull request #975 from ikatson/paginator-estimated-count

Update docs/paginator.rst, closes #973 (possible inefficient calculation of "total_count")
Update resources.py

fix for dehydrate() got an unexpected keyword argument 'for_list'.

Fixes #930.
Adds iso-8601-strict to TASTYPIE_DATETIME_FORMATTING options to output datetimes without microseconds

Fixes #939. Fixes #460.
[DOCS] Update Nested Resources example in cookbook.rst to work properly

The example on Nested Resources in cookbook.rst seems to be from an old version of tastypie, as ``cached_object_get`` expects a ``Bundle`` as its first argument, not a request.

This patch shows how to build a stub bundle to make the example work correctly.  I am not sure if this is the canonical way to build a bundle from a request - in particular, I don't pass in an ``obj``, but then the point of building the bundle is to get the object from ``cached_obj_get`` in the first place. :)

Fixes #984.
Create reverse related resources instead of updating

Fixes #954.
Added example of programmatically converting list of resources into JSON within a django template.

Fixes #964. Fixes #442.