Fix default value handling for dotted sources

Fix pyc/pycache excludes from manifest

I definitely see files from `__pycache__` as well as `.pyc` files in the package. Fixed according to https://www.reddit.com/r/Python/comments/40s8qw/simplify_your_manifestin_commands and https://github.com/django/django/pull/5817

Update link to drf-writable-nested repository in third-party serializers

~api-clients documentation: installation code fix

Fix doc Response data attribute description

Adding a more explicit error message when a view does have a get_queryset method but it returned nothing

Update 2-requests-and-responses.md: consistency

Made it consistent with Part I. Catched it when commiting the code into my local tutorial repo.

Further clarifying the message when get_queryset returns None to include the class name that was called

Adding a more explicit error message when a view does have a get_queryset method but it returned nothing

Release notes etc for 3.6.4

For the last minute #5346

docs/link.html: fix/remove undefined template var "schema"

Fix introspection of list field in schema

Fix docs multiple nested and multiple methods

Update fields.py

modify to_choices_dict document

Closes #5301

Fixes #5247

related_name for Token is `auth_token`, not `token`.

Add documentation to create user token with the new command