Support of table and column custom attributes

Hi there, I've just started using Vertabelo and I really liked it! Kudos!

I have a question that I guess others might have asked already. Is there a way or technique to support custom attributes on a table? The use case for this is that I want to enrich the model beyon the comments. For instance, exporting the data model as XML, then with Node.js for instance, you can generate some sort of tabular report in CSV, Excel, or even JSON with these additional fields. An idea that occurs to me is to embed JSON or XML under comments and parse them there. Any other ideas of people who have done this before me?

Thanks in advance!