v3.0.0

• mqtt 5 support
• Notice about MQTT 5.0 added to README
• Delayed emit timing of connect event. Emit connect event after processing of outgoingStore is completed.
• Modified _onConnect() as top level function. Called this._setupPingTimer() from _onConnect(). Modified on('connect') handler for resubscribe as top level function. The function is called from _onConnect().
• Passed packet to _onConnect().
• Change this.firstConnection to private member.
• Added Node 10 to .travis.yml
• Merge pull request #867 from mqttjs/add-node-ten
• Merge pull request #866 from ogis-fujiwara/msg-order-at-restore
• update branch
• Merge branch 'master' into feature-mqtt-5
• Merge pull request #827 from flespi-software/feature-mqtt-5
• Add new callback called when message is put into outgoingStore.
• Pass callback cbStorePut to publish method as one of options.
• Merge pull request #869 from ogis-fujiwara/cb-store-put
• Update TypeScript declaration files for cbStorePut.
• fix properties mqtt 5 in subscribe
• Merge pull request #881 from mqttjs/mqtt-5-subscribe-fix
• Merge pull request #872 from ogis-fujiwara/cb-store-put-ts
• fix bug in weixin min program and add support to ali min program (#898)
• fix: delete completed incoming QOS 2 messages (#893)
• Update deps fix ci fix 9errors (#903)
• Fix publish interrupt during stored packets processing. (#902)
• fix bug in weapp (#913)
• Did you mean 'Support'? (#915)
• fix (#917)
• server side disconnect handling (#926)
• perform nextTick work only if work needs to be done (#931)
• resubscribe mqtt5 fix (#946)
• process disconnect packet w/o full destroy the connection (#937)
• Fixed #952. (#953)