EMQ v2.2-beta.3 released

Bugfix and Enhancements

Call emit_stats when force GC (emqttd#1071)

Update the default value of 'mqtt.mqueue.max_length' to 1000 (emqttd#1074)

Update emq-auth-mongo READEME (emq-auth-mongo#66)

Update default password field (emq-auth-mongo#67)

Upgrade the mongodb library to v3.0.3

Remove ‘check password===undefined && userName!== undefined’ (emq-dashboard#120)

emq_auth_redis Plugin

Support 'HGET mqtt_user:%u password' for authentication query

emq_auth_mongo Plugin

Support mongodb Cluster, Replica Set

Documentation

Add 'Build on Windows' chapter