Support for advanced arguments to Django's `EmailMessage`
Support for advanced arguments to Django's `EmailMessage`

This adds flexibility in the email utility functions to support passing
in more advanced arguments to Django's `EmailMessage` class and
sub-classes like `EmailMultiAlternatives`. Advanced arguments are for
example the `connection` argument which can be used to provide a persistent
SMTP connection when sending many messages at once.

eliksir/django-quintet