Changes between 5.1.1 and 5.1.2

This patch release improves Micrometer support and fixes a bug that can occur when using metrics in combination with automatic recovery. All users of the 5.x.x series are encouraged to upgrade to this release.

Support tags in Micrometer metrics collector

GitHub issue: #342

Upgrade Micrometer to 1.0.0-rc.6

GitHub issue: #340

Fix metrics for acked/nacked/rejected messages after automatic recovery has kicked in

The metrics are correct and delivery tags no longer leak in the metrics implementation.

GitHub issue: #339