Missing userTwapSliceFills and userTwapHistory

```
userTwapSliceFills: 

Subscription message: { "type": "userTwapSliceFills", "user": "<address>" }

Data format: WsUserTwapSliceFills

userTwapHistory: 

Subscription message: { "type": "userTwapHistory", "user": "<address>" }

Data format: WsUserTwapHistory
```

These 2 ws events are not added in the library.