pandas.ExcelFile ignore parse_dates=False
I am trying to read an Excel file which someone else created and the wrongly formatted a column as "date" when it is not. It has a large integer in it, which triggers an error

OverflowError: normalized days too large to fit in a C int

But I have "parse_dates=False" so I thought pandas.ExcelFile would not try to parse the dates and return a string instead. Is this a bug?
