Unresponsive after updating to 0.8.2
Thanks for your wonderful plugin, especially since adding zone support for my 1st gen Roborock. However after updating the plugin to version 0.8 I'm experiencing issues with the plugin.

### Behavior
After updating the plugin from version 0.7.7 to 0.8.2 my full Homebridge configuration becomes unresponsive. Reverting the update back to 0.7.7 solves the problem for now. Using Xiaomi 1st gen Robot. 

Posting the first part of the debug log but not sure if there is any useful information in it. Let me know if you need any more information.

 ### Steps to Reproduce (for bugs)
Updating plugin version from 0.7.7 to 0.8.2 and restarting the instance.

 ### Versions
 - **Homebridge**: 1.0.4
 - **Node**:       12.16.3
 - **OS**:         Raspbian Buster (10)

 ### Configuration
```
{
    "bridge": {
        "name": "Mi Robot",
        "username": "EF:A1:CE:E2:DE:A8",
        "port": 51854,
        "pin": "031-45-154"
    },
    "description": "Configuration file Mi Robot Homebridge",
    "platforms": [
        {
            "name": "Config",
            "port": 8601,
            "platform": "config"
        }
    ],
    "accessories": [
        {
            "accessory": "XiaomiRoborockVacuum",
            "name": "Woonkamer Stofzuiger",
            "ip": "192.168.1.124",
            "token": "12345",
            "cleanword": "Stofzuig de",
            "pause": false,
            "dock": false,
            "zones": [
               { "name":"Woonkamer",  "zone":[[23000,20000,34000,32000,1]] },
               { "name":"Keuken",     "zone":[[23000,20450,26700,23400,1]] },
               { "name":"Eettafel",   "zone":[[26000,20450,34000,26000,1]] },
               { "name":"Zithoek",    "zone":[[29000,26000,34000,32000,1]] },
               { "name":"Slaapkamer", "zone":[[26000,16000,31000,20000,1]] }
            ]
        }
    ]
}
 ```

 ### Homebridge Log / Command Output
```
[5/11/2020, 18:30:35] Loading 1 platforms...
[5/11/2020, 18:30:35] [Config] Initializing config platform...
[5/11/2020, 18:30:35] [Config] Spawning homebridge-config-ui-x with PID 2304
[5/11/2020, 18:30:35] Loading 1 accessories...
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] Initializing XiaomiRoborockVacuum accessory...
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF createRoom | undefined | Zone Woonkamer (23000,20000,34000,32000,1)
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF createRoom | undefined | Zone Keuken (23000,20450,26700,23400,1)
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF createRoom | undefined | Zone Eettafel (26000,20450,34000,26000,1)
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF createRoom | undefined | Zone Zithoek (29000,26000,34000,32000,1)
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF createRoom | undefined | Zone Slaapkamer (26000,16000,31000,20000,1)
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] DEB getDevice | Discovering vacuum cleaner
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] DEB getServices | undefined
Setup Payload:
X-HM://0023ISYWYEF46
Scan this code with your HomeKit app on your iOS device to pair with Homebridge:
Or enter this code with your HomeKit app on your iOS device to pair with Homebridge:
                       
    ┌────────────┐     
    │ 031-45-154 │     
    └────────────┘     
                       
[5/11/2020, 18:30:35] Homebridge is running on port 51854.
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] STA getDevice | Connected to: 192.168.1.124
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] STA getDevice | Model: rockrobo.vacuum.v1
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] STA getDevice | State: charging
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] STA getDevice | FanSpeed: 90
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] STA getDevice | BatteryLevel: 100
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] DEB ensureDevice | rockrobo.vacuum.v1 | The socket is still on. Reusing it.
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF getSerialNumber | rockrobo.vacuum.v1 | Serial Number is 1387100328532
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] STA getDevice | Serialnumber: 1387100328532
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] DEB ensureDevice | rockrobo.vacuum.v1 | The socket is still on. Reusing it.
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF getFirmware | rockrobo.vacuum.v1 | Firmwareversion is 3.5.4_004007
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] STA getDevice | Firmwareversion: 3.5.4_004007
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] DEB ensureDevice | rockrobo.vacuum.v1 | The socket is still on. Reusing it.
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] DEB getState | rockrobo.vacuum.v1 | State {"batteryLevel":100,"charging":true,"cleaning":false,"fanSpeed":90}
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] MON changedCleaning | rockrobo.vacuum.v1 | CleaningState is now false
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF changedCleaning | rockrobo.vacuum.v1 | Cleaning is OFF.
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] MON changedCharging | rockrobo.vacuum.v1 | ChargingState is now true
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF changedCharging | rockrobo.vacuum.v1 | Charging is active
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] MON changedSpeed | rockrobo.vacuum.v1 | FanSpeed is now 90%
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] INF changedSpeed | rockrobo.vacuum.v1 | Speed was changed to 90% (Max), for HomeKit 100%
[5/11/2020, 18:30:35] [Woonkamer Stofzuiger] DEB changedBattery | rockrobo.vacuum.v1 | BatteryLevel 100%
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getBatteryLow | rockrobo.vacuum.v1 | Batterylevel is 100%
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getSpeed | rockrobo.vacuum.v1 | Fanspeed is 90 over miIO. Converting to HomeKit
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getSpeed | rockrobo.vacuum.v1 | Fanspeed is 90 over miIO "Max" > HomeKit speed 100%
[5/11/2020, 18:30:39] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:42] [Config] Homebridge Config UI X v4.18.0 is listening on :: port 8601
[5/11/2020, 18:30:49] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:49] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:49] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:49] [Woonkamer Stofzuiger] INF getBatteryLow | rockrobo.vacuum.v1 | Batterylevel is 100%
[5/11/2020, 18:30:49] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:49] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:49] [Woonkamer Stofzuiger] INF getCleaning | rockrobo.vacuum.v1 | Cleaning is false
[5/11/2020, 18:30:53] [Woonkamer Stofzuiger] INF getSpeed | rockrobo.vacuum.v1 | Fanspeed is 90 over miIO. Converting to HomeKit
[5/11/2020, 18:30:53] [Woonkamer Stofzuiger] INF getSpeed | rockrobo.vacuum.v1 | Fanspeed is 90 over miIO "Max" > HomeKit speed 100%
[5/11/2020, 18:31:02] [Woonkamer Stofzuiger] INF getBatteryLow | rockrobo.vacuum.v1 | Batterylevel is 100%
 ```