v0.3 released - CLI supported

v0.3 Release Note:

• Support CLI
• CLI tests
• Some refactor
• doc updates.

v0.2 released

v0.2 release notes:

• support Kafka.
• support batch updater plugin
• some enhancements

v0.1 released - working version

v0.1 Release Note:

First working version.
Support RabbitMQ.
Produce/Consume/Setting/Plugin featured.