Django-server-guardian-api

- a major version is created when the software reached a milestone and is
feature complete

- a minor version is created when a lot of new features have bene added or
significant backwards incompatible changes have been made.

- added django-mailer processor: email_queue

- added django-mailer processor: deferred_emails
- Initial commit


Suggested file syntax:

=== (ongoing) ===
- this is always on top of the file
- when you release a new version, you rename the last `(ongoing)` to the new
version and add a new `=== (ongoing) ===` to the top of the file