hidden = xlsx.IsColumnHidden(id, col[, sheet])
True if the column at index col is currently hidden or False if it
is visible. Column indices start at 1. Optionally, you can also pass the index of the worksheet
to use in the optional sheet parameter (starting from 1 for the first worksheet). If the
sheet parameter is omitted, the worksheet set by xlsx.SetDefaultSheet() will be used.
True if the column is hidden, False otherwise