Change Details

Hi, the code should use `unicode_literals` throughout to avoid using `u'…'` which is one the reasons why Python 3 versions before 3.3 aren't supported. @jayvdb said somewhere (determine), that he'd prefer to do that in one go. I suggest to atleast do it in all new code, so that changing `u'…'` into `'…'` won't break git blame for those files when it's introduced later. It is possible to use `u'…'` on conjunction with `unicode_literals`, but that could confuse newcomers into thinking that `u'…'` is necessary.