npm ERR! missing: websocket@latest, required by harmony-websocket@1.5.0
Hello,

after upgrading to latest 1.2.4 version I get following error, do you know why and how to solve this?

```
root@Server:~# npm list -g --depth=0
/usr/lib
├── homebridge@0.4.50
├── homebridge-automation-switches@3.2.1
├── homebridge-cmdtrigger@0.3.2
├── homebridge-harmony@1.2.4
├── homebridge-http-webhooks@0.0.57
├── homebridge-mi-outlet@0.3.0
├── homebridge-people@0.6.2
├── homebridge-soundtouch@5.3.1
├── homebridge-tplink-smarthome@4.0.1
├── miio@0.15.6
└── npm@6.13.6

npm ERR! missing: websocket@latest, required by harmony-websocket@1.5.0
npm ERR! missing: websocket-as-promised@latest, required by harmony-websocket@1.5.0
```