Types differ from real data. Again.

Changes type:
```ts
// http://docs.couchdb.org/en/latest/api/database/changes.html#get--db-_changes
interface DatabaseChangesResultItem {
// List of document’s leaves with single field rev.
changes: Array<{ rev: string }>;

// Document ID.
id: string;

// Update sequence.
seq: any;

// true if the document is deleted.
deleted: boolean;
}
```

Real data:

There is a **doc** property, however it's not in the interface. Also there's no **deleted** property, despite it's set as required.
Please fix.

## Your Environment
* Version used: 8.2.2
* Operating System and version (desktop or mobile): Win 10

Start by locating the DatabaseChangesResultItem interface and compare it with the CouchDB database changes API linked in the issue. Update the interface to match the documented and observed response shape, including doc and the deleted field, then verify the TypeScript definitions against real changes responses.

Written by the indexing model from the issue text.