Release 1.10

Metrics for number of spans processed per transport.
Added support for RabbitMq as ingress of spans.

Release 1.9

Moved from Java 11 to Java 12

Release 1.8

Added metrics and prometheus endpoints.
Updated several dependencies.

Release 1.7.1

Small performance improvements over v1.7

Release 1.7

Ability to source Zipkin data from Kafka

Release 1.6

Change default http port to 9411 (to match Zipkin)