Many deprecation warnings triggered

[johnthagen]

The following warnings will break compatibility with future Python versions (3.8) or DRF (3.10, 3.11).

See: https://travis-ci.org/alanjds/drf-nested-routers/jobs/553444409

home/travis/build/alanjds/drf-nested-routers/.tox/py37-django2.0-drf3.7/lib/python3.7/site-packages/django/db/models/fields/__init__.py:442: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working
  if name == "choices" and isinstance(value, collections.Iterable):

/home/travis/build/alanjds/drf-nested-routers/tests/test_dynamic_routers.py:72: DeprecationWarning: Please use assertEqual instead.
  get_regex_pattern(urls['basicmodel-list']), u'^detail/$'

... (many similar warnings)

/home/travis/build/alanjds/drf-nested-routers/tests/test_dynamic_routers.py:40: PendingDeprecationWarning: `detail_route` is pending deprecation and will be removed in 3.10 in favor of `action`, which accepts a `detail` bool. Use `@action(detail=True)` instead.
  @detail_route(methods=["post"])
/home/travis/build/alanjds/drf-nested-routers/tests/test_dynamic_routers.py:48: PendingDeprecationWarning: `list_route` is pending deprecation and will be removed in 3.10 in favor of `action`, which accepts a `detail` bool. Use `@action(detail=False)` instead.
  @list_route()

/home/travis/build/alanjds/drf-nested-routers/tests/test_viewsets.py:62: RemovedInDRF311Warning: The `base_name` argument is pending deprecation in favor of `basename`.
  router.register('root', RootViewSet, base_name='root')
/home/travis/build/alanjds/drf-nested-routers/tests/test_viewsets.py:64: RemovedInDRF311Warning: The `base_name` argument is pending deprecation in favor of `basename`.
  root_router.register(r'child', ChildViewSet, base_name='child')
/home/travis/build/alanjds/drf-nested-routers/tests/test_viewsets.py:65: RemovedInDRF311Warning: The `base_name` argument is pending deprecation in favor of `basename`.
  root_router.register(r'child-with-nested-mixin', ChildWithNestedMixinViewSet, base_name='child-with-nested-mixin')

[alanjds]

Thanks for reporting.