While using the library, I found a use case for hiding a column. IDs that I didn't want/need my users to see, but still needed in the uploaded spreadsheet when they were done working with it.

I was able to achieve this by setting width to zero. However, a hidden property could be potentially useful.

I started to create a pull request containing that seemingly simple code. But, then I realized that this could cause conflicts with the "Width" property, and wasn't sure how to handle it. so I thought I could open this for discussion.