TL;DR
March Hare 2.1.0 is released to rubygems.org.
2.1 is a follow-up release to 2.0 which introduces one usability improvement. Please consult the change log to learn about the changes.
Changes Between 2.0.0 and 2.1.0
Full Channel State Recovery
Channel recovery now involves recovery of publisher confirms and transaction modes.
About the Author
Michael on behalf of the Ruby RabbitMQ Clients Team