Added DefaultRouter support (and test) for viewsets without the default action implemented, which is usually the list action.
Clarify "raised inside REST framework"

I ran into an issue today where I was not seeing the rest_framework.views.exception_handler do what I thought it should be doing. It turned out that I had imported View from rest_framework.views rather than importing APIView from rest_framework.views. The phrase "raised inside REST framework" was confusing as I was debugging this issue. I was unsure if that meant that I could raise those exceptions in my code or if it had to originate from within framework code.

I'm not sure if the proposed wording is ideal, I just wanted to point out what I found to be confusing.
Merge pull request #1883 from jpadilla/master

Update authtoken latest Django 1.7 migration
Merge pull request #1865 from mskrajnowski/default-router-listless-viewset

DefaultRouter support for viewsets without an implemented default action
Update routers.py
Fixed code formatting
Fix missing CSRF exemption on viewsets
Merge pull request #1882 from mattjmorrison/patch-2

Clarify "raised inside REST framework"
Merge pull request #1887 from pipermerriam/piper/decorate_as_view_response_from_viewsets

Fix missing CSRF exemption on viewsets
Version 2.4.3
Drop 'No major point releases are currently planned.', cos they are.