output should be in various formats specified

[danielmarrama]

Output is not file specific (e.g. .csv, .xlsx), there should be multiple types of files supported for the output.

[acrinklaw]

I'm down for .csv output, which is easy to implement. I'd prefer to avoid .xlsx or other formats, .csv files can be opened fine in Excel (also Excel makes me sad)

[danielmarrama]

Agreed. Let's do .csv only for now.