Bugfix/clean messages

[itcrab]

What's this Pull Request do?

>python manage.py clear_sent_messages 20
    MailerMessage.objects.clear_sent_messages(offset=options['offset'])
  File "\lib\site-packages\mailqueue\models.py", line 35, in clear_sent_messages
    delete_before = timezone.now() - offset
TypeError: unsupported operand type(s) for -: 'datetime.datetime' and 'list'

What has been changed?

• Change base type for "offset" argument in command to int (was list)

Any background context you want to provide?

Screenshots

GitHub issues

I don't create any issues and in current issues no see this problem.

[dstegelman]

Going to merge this, and also remove the positional argument to make it the same as the other management command.

[dstegelman]

Released in 3.0.2

[itcrab]

@dstegelman thanks for speed))