Cannot sent Xiaowa E202-02 to charging station
Hi! Thanks for the great plugin!

I have a Xiaowa E202-02 vacuum cleaner with 1.3.0_0752 firmware and using your plugin for controlling it via Apple devices.
First I had to add a new speed mode for it: PR https://github.com/homebridge-xiaomi-roborock-vacuum/homebridge-xiaomi-roborock-vacuum/pull/179
I hope it addresses issue https://github.com/homebridge-xiaomi-roborock-vacuum/homebridge-xiaomi-roborock-vacuum/issues/175 for this model.

Now I can control the speed of the vacuum cleaner, however still cannot send it to chargin station.
When I set the speed to 0% I'm getting following in homebridge logs but nothing happens to the vacuum cleaner:

```
[5/9/2020, 8:28:59 AM] [Vacuum] ACT setCleaning | roborock.vacuum.e2 | Stop cleaning and go to charge.
[5/9/2020, 8:28:59 AM] [Vacuum] DEB ensureDevice | roborock.vacuum.e2 | The socket is still on. Reusing it.
[5/9/2020, 8:29:02 AM] [Vacuum] DEB ensureDevice | roborock.vacuum.e2 | The socket is still on. Reusing it.
[5/9/2020, 8:29:02 AM] [Vacuum] DEB getState | roborock.vacuum.e2 | State {"batteryLevel":81,"charging":false,"cleaning":true,"fanSpeed":68}
[5/9/2020, 8:29:02 AM] [Vacuum] DEB changedBattery | roborock.vacuum.e2 | BatteryLevel 81%
[5/9/2020, 8:29:11 AM] [Vacuum] ERR setCharging | roborock.vacuum.e2 | Failed to go charging. Error: Call to device timed out
    at Timeout.retry [as _onTimeout] (/homebridge/node_modules/homebridge-xiaomi-roborock-vacuum/node_modules/miio-nicoh88/lib/network.js:493:18)
    at listOnTimeout (internal/timers.js:549:17)
    at processTimers (internal/timers.js:492:7) {
  code: 'timeout'
}
[5/9/2020, 8:29:11 AM] [Vacuum] ERR setCleaning | roborock.vacuum.e2 | Failed to set cleaning to false Error: Call to device timed out
    at Timeout.retry [as _onTimeout] (/homebridge/node_modules/homebridge-xiaomi-roborock-vacuum/node_modules/miio-nicoh88/lib/network.js:493:18)
    at listOnTimeout (internal/timers.js:549:17)
    at processTimers (internal/timers.js:492:7) {
  code: 'timeout'
}
```

Probably related to https://github.com/homebridge-xiaomi-roborock-vacuum/homebridge-xiaomi-roborock-vacuum/issues/27 , https://github.com/aholstenson/miio/issues/214
And https://github.com/rytilahti/python-miio/issues/364 / https://github.com/rytilahti/python-miio/pull/408