Use msgpack each more naive impl (#160)
Use msgpack each more naive impl (#160)

* Use Fluent::Plugin::Output.formatted_to_msgpack_binary? to revive #msgpack_each unpacking

* Bump up Fluentd minimum requirement version

Because formatted_to_msgpack_binary? is defined in Fluentd v0.14.15.

* Test against Fluentd v0.14.15

* Delete Gemfile.fluentd-0.14.15

Co-authored-by: Shota Yamazaki <e8101564fb1c552909a3b90365728d756d99a1e3@gmail.com>
awslabs/aws-fluent-plugin-kinesis