Multiple Email Addresses on one message

[MoseleyDanielCrowley]

If line 114 of recipe.py is changed from
s.sendmail(sender, [recipient], msg.as_string())
to
s.sendmail(sender, recipient.split(','), msg.as_string())
then it will allow a comma separated list of email addresses. This enables one email to be sent to multiple users and if they then reply to the message it goes to the other users in the list allowing discussion on whatever the topic of the email is.