Otherwise, something like [None, None] causes an Error when written to Excel.
Correct Line 472 and possibly other ocurrencies (TODO: factor out the check for single cells).
# Simple Lists: Turn into list of lists
if isinstance(data, list) and (isinstance(data[0], (numbers.Number, string_types, time_types) or data[0] is None):
Otherwise, something like
[None, None]causes an Error when written to Excel.Correct Line 472 and possibly other ocurrencies (TODO: factor out the check for single cells).