Release notes and version bump for 1.4.

Add tests for auto UUID + south.

This commit adds a test to ensure that a south migration for
a model with an automatically generated UUID field works
as expected.

Bumping version to 1.2.0

Version number bump

Bumping version to 1.1.0.

Bump version to 1.0 (final).

This commit bumps the current version of django-pgfields to 1.0, and
the "next version" directive (in the docs) to 1.1.

Tweaks to the documentation to fix Read the Docs.

This commit makes my versionadded rule be aware of whether
we are on Read the Docs or not and behave in a way that gets
the desired outcome in either case.

Merge branch 'master' into stable/0.9.x

VERSION fix.

This commit corrects an issue caused by poor referencing of VERSION,
and its not coming through via. the manifest file.

Merge branch 'master' into stable/0.9.x