'reformat cell at given index, keeping column options if
necessary.
Args:
index (int): Index location of the cell in the column,
starting from 0 for the first row to Nrows-1.
Kwargs:
Keywords as per `EvCell.__init__`.'

def reformat_cell(self, index, **kwargs):

    kwargs.update(self.options)
    self.column[index].reformat(**kwargs)
