Changes between 2.4.0 and 2.5.0.RC1

This is a pre-release with a bug fix and a new feature. All users are encouraged to test this pre-release.

Note PerfTest termination sequence has slightly changed: it used to terminate quickly without closing AMQP connections when interrupted. It now tries to close AMQP connections and times out after 5 seconds. The timeout can be changed with the --shutdown-timeout command line argument. See the documentation for more information.