Changelog
- d10f7e3 Merge pull request #805 from nyaruka/WAC-pair-limit-retry
- 3693fe4 Make all WAC Throttling Errors return courier.ErrConnectionThrottled
- 411c508 Add send error for channel and contact pair limit hit to allow retrying the message
- 9e07701 Merge pull request #804 from nyaruka/test_error_by_msg_text
- 15cc1e1 TST handler should error sends with msg text \error