Avoid parsing dates to ISO 8601 / RFC3339 format.

[ivantextmagic]

Great package, but do you have an option to not to parse date. I need to stay dates in my xlsx file as they are.
In other words, I need to get and save dates as strings, with no conversion.
I need this, because my internal files could be from different countries and I need to show user the parsing preview. but in all cases I show 2006-02-01 format, which is basically not a user-friendly date format.
Thank you