Changes between 5.15.0 and 5.16.0.RC1

This is a minor release with a new feature, usability improvements, and dependency upgrades. It is compatible with 5.15.x. All users of the 5.x.x series are encouraged to test it.

Thanks to Rogelio J. Baucells (@rjbaucells) and Oleg Golberg (@ogolberg) for their contribution.

Re-enable DNS round robin

GitHub PR: #827

OpenTelemetry metrics collector implementation

GitHub PR: #817

Increase max ConsumerWorkService block size to 256

GitHub PR: #814

Bump dependencies

GitHub issue: #797