Release 0.6.3 - 2017/11/14

	* in_kafka_group: re-create consumer when error happens during event fetch

Release 0.6.2 - 2017/11/1

	* Fix ltsv parsing issue which generates symbol keys

Release 0.6.1 - 2017/08/30

	* Add stats and datadog monitoring support
	* ssl_ca_certs now accepts multiple paths
	* Fix bug by ruby-kafka 0.4.1 changes
	* Update ruby-kafka dependency to v0.4.1

Release 0.6.0 - 2017/07/25

	* Add principal and keytab parameters for SASL support

Release 0.5.7 - 2017/07/13

	* out_kafka_buffered: Add kafka_agg_max_messages parameter

Release 0.5.6 - 2017/07/10

	* output: Add ActiveSupport notification support

Release 0.5.5 - 2017/04/19

	* output: Some trace log level changed to debug
	* out_kafka_buffered: Add discard_kafka_delivery_failed parameter

Release 0.5.4 - 2017/04/12

	* out_kafka_buffered: Add max_send_limit_bytes parameter
	* out_kafka: Improve buffer overflow handling of ruby-kafka

Release 0.5.3 - 2017/02/13

	* Relax ruby-kafka dependency

Release 0.5.2 - 2017/02/13

	* in_kafka_group: Add max_bytes parameter

Release 0.5.1 - 2017/02/06

	* in_kafka_group: Fix uninitialized constant error

Release 0.5.0 - 2017/01/17

	* output: Add out_kafka2 plugin with v0.14 API

Release 0.4.2 - 2016/12/10

	* input: Add use_record_time and time_format parameters
	* Update ruby-kafka dependency to 0.3.16.beta2

Release 0.4.1 - 2016/12/01

	* output: Support specifying partition

Release 0.4.0 - 2016/11/08

	* Remove zookeeper dependency

Release 0.3.5 - 2016/10/21

	* output: Support message key and related parameters. #91

Release 0.3.4 - 2016/10/20

	* output: Add exclude_topic_key and exclude_partition_key. #89

Release 0.3.3 - 2016/10/17

	* out_kafka_buffered: Add get_kafka_client_log parameter. #83
	* out_kafka_buffered: Skip and log invalid record to avoid buffer stuck. #86
	* in_kafka_group: Add retry_emit_limit to handle BufferQueueLimitError. #87

Release 0.3.2 - 2016/10/06

	* in_kafka_group: Re-fetch events after consumer error. #79

Release 0.3.1 - 2016/08/28

	* output: Change default required_acks to -1. #70
	* Support ruby version changed to 2.1.0 or later

Release 0.3.0 - 2016/08/24

	* Fully replace poseidon ruby library with ruby-kafka to support latest kafka versions

See git commits for older changes