0.66.0

As part of this release we had 52 commits which resulted in 4 issues being closed.

Breaking Changes

• #313 Remove the originating_ip field
• #311 Support SendGrid's new marketing API

Improvements

• #248 TLS is applicable for all events
• #247 Missing SmtpId field from GroupResubscribeEvent, UnsubscribeEvent, SpamReportEvent, GroupUnsubscribeEvent