v0.17.3

• Alignment with Mosquitto $SYS topicspace
  #95.

v0.17.2

• Added $SYS/<broker_id>/version, $SYS/<broker_id>/uptime
  and simplified the broker id.
  #95.

v0.17.1

• From /$SYS to $SYS, removed the '/' prefix for the metadata
  #94.

v0.17.0

• Added /$SYS/ topic and some monitoring data
  #89.

v0.16.1

• Pass the client to the published event and callback.

v0.16.0

• Added the mosca.Server#publish() function.

v0.15.0

• Removed limit of 23 bytes for the client id as in MQTT 3.1.1.
• Removed two possible race conditions for offline messages.
  The race conditions were:
  1. the restoration of all subscriptions was done after connack,
     which
     means that there was a tiny window were a message could be lost.
  2. the puback for a QoS 1 packet was sent before the write was
     concluded.
• Dumped node v0.8 support forever.

v0.14.4

• Restored 'clientDisconnected' event in case of errors
  #79.
• Fixed multiple offline message delivery
  #80.

v0.14.3

• Fixed retained messages support in windows
  #75.

v0.14.2

• README fixes