Upgrade to metrics 3 and remove snapshot repo
[maven-release-plugin] prepare release v3.0.0-RC1
[maven-release-plugin] prepare for next development iteration
Update README.md

Make the Java annotation config equivalent to the XML config

[ci skip]
Link to the SHADE-README

[ci skip]
Restore metrics:health-check-registry element

Add a test for the health checks
Merge branch 'master' of https://github.com/ryantenney/metrics-spring