This feature allows you to directly include compound fields such as BillingAddress in your SOQL query.
Like the Field Multiselect Feature this feature intends to make the query shorter and more readable.
You can directly include BillingAddress, ShippingAddress and MailingAddress in your SOQL query on Account or Contact object and the Plugin will then internally split them into the individual address components.
For example you can write in the export.json:
"query": "SELECT Id, BillingAddress FROM Account"
and it will be internally translated into:
"query": "SELECT Id, BillingGeocodeAccuracy, BillingCity, BillingCountry, BillingLatitude, BillingLongitude, BillingPostalCode, BillingState, BillingStreet FROM Account"