Do not work with unicode rows. #1

ActivePython 2.7.2.5 (ActiveState Software Inc.) based on
Python 2.7.2 (default, Jun 24 2011, 12:21:10) [MSC v.1500 32 bit (Intel)] on win32
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row = (u'Вася',u'Пупкин')
import texttable
t = texttable.Texttable()
t.add_row(row)
Traceback (most recent call last):
File "", line 1, in
File "C:\Python27\lib\site-packages\texttable-0.8.1-py2.7.egg\texttable.py", line 300, in add_row
cells.append(self._str(i,x))
File "C:\Python27\lib\site-packages\texttable-0.8.1-py2.7.egg\texttable.py", line 359, in _str
return str(x)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-3: ordinal not in range(128)