0.9.3-alpha 版本

发布日期: 2015-07-25

Wiki: [Bridge](https://github.com/emqtt/emqttd/wiki/Bridge (opens new window))

Improve: emqttd_protocol.hrl to define ‘QOS_I’

Improve: emqttd_pubsub to add subscribe/2 API

Improve: ./bin/emqttd_ctl to support new bridges command

Bugfix: issue #206 - Cannot bridge two nodes