Cleaned up README.rst.
Disabled default ordering on models.
Make cleanup_mail management command much more memory efficient when used with tables with large number of rows.
Merge branch 'master' of github.com:ui/django-post_office

Conflicts:
	README.rst
setup.py should required django>=1.4. Changed development status in setup.py to stable.
Fixed merge conflict in README
Merge pull request #49 from elbaschid/fix/readme

Fixed merge conflict in README
Updated README.
Bump version to 0.7.2.
Add setting for email default priority

This greatly facilitates integration with async backends (e.g.
Celery-based ones).

Fixes #47.
Fixes #51.
Merge pull request #54 from maikhoepfel/issue/51/default_priority

Add setting for email default priority (fixes #51 and fixes #47). Thanks @maikhoepfel
Use "DjangoTestSuiteRunner" to in Django 1.6.
Updated README.rst.
Updated EmailBackend to immediately send emails when DEFAULT_PRIORITY is "now".
Email.email_message() should return EmailMessage instance if html_message is empty.
First stab at using a new locking mechanism.
Python 3 compatibility for lockfile.py.
Merge pull request #55 from ui/new-locking

New locking
Ignore directory generated by test.
First stab at implementing lazy rendering.