This is a minor feature/bugfix release for ARA.

Changelog:
- Security: Use the 'escape' jinja2 filter instead of the
  'safe' filter to escape potentially problematic HTML
  characters and prevent them from being interpreted.

- ara_record can now be used as a standalone task outside
  the context of a playbook run to, for example, record data
  on a playbook run that has already been completed.
  An example use case is to attach the ansible-playbook run
  stdout as a record of the playbook [1][2].
  More details is available in the documentation [3].

- ara_record now returns the equivalent of ara_read when
  registering the task where ara_record runs. This avoids
  needing to run ara_read if you don't need to.

Misc:
- Unit test fixes after the release of Ansible 2.3.1
- Work and testing against Ansible Devel (unreleased 2.4) has started

[1]: https://github.com/openstack/ara/blob/a72ece2e7ab69cd4e2882ba207152703b2bc0a90/run_tests.sh#L95-L96
[2]: https://github.com/openstack/ara/blob/a72ece2e7ab69cd4e2882ba207152703b2bc0a90/run_tests.sh#L130
[3]: http://ara.readthedocs.io/en/latest/usage.html#using-the-ara-record-module