v1.0.0

• Update prom-client to 12.x (#5, @jlazar)

This is a major update due to potential incompatibilities of prom-client 12.x with existing code.

0.3.0

All broker and topic fetch states are mapped into prometheus values.

This is an incompatible change for the rdkafka_broker_state and topic_partition_fetch_state metrics.

0.2.0

rdkafka_broker_state now uses more natural 1/0 for "UP"/"DOWN"