Merge pull request #14 from aweber/release/1.5.3

Release 1.5.3

1.5.2-5: travis.yml: Remove rabbitmq service.

This was recently added and our tests will run without it being present.

1.5.2-4: travis.yml: Enable container-based builds.

See http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/
for details.

1.5.2-2: travis.yml: Add quotes that travis utility removed.

Something recently broke our Travis CI deployments to pypi. This is my
first attempt at getting them to work again.

Repackaging of previous release with new PyPI credentials

Merge pull request #9 from aweber/use-aweber-for-pypi

Switch PyPI upload user.

Merge pull request #8 from aweber/release/1.5.2

Release 1.5.2