use nack, not ack for unprocessable amqp messages
ensure buffer out of capacity requeue works correct on amqp client
bump version to 0.12.0-dev
bump version in pom
bump rabbitmq lib to 3.1.0
fix broken AMQPConsumerTest after recent ack/nack changes
fix wrong rabbitmq-client version
changes to host and stream names in metrics

fixes #123
Allow to configure recent_index

Not recommended and not in default config file. fixes #126
change message filter order. fixes #141
only update host counts in case of new messages

fixes #142
Implement negative stream matchers

fixes #124
bumped version to 0.12.0-rc.1
Merge pull request #134 from h0nIg/amqp_ensure_process

ensure buffer out of capacity requeue works correctly on amqp client
fixes for new AMQP buffering
upgrade Disruptor and Netty
Merge branch 'develop' into otter