TL;DR
Bunny 1.0.4 is released to rubygems.org.
This is a bug fix release. We encourage all Bunny users to upgrade to it.
Changes between Bunny 1.0.3 and 1.0.4
Versioned Delivery Tag Fix
Versioned delivery tag now ensures all the arguments it operates
(original delivery tag, atomic fixnum instances, etc) are coerced to Integer
before comparison.
GitHub issues: #171.
Full change log can be found on GitHub.
About the Author
Michael on behalf of the Ruby RabbitMQ Clients Team