UnicodeDecodeError with Python 2.7 and unicode string

[slyapustin]

This does not work, if object representation have type unicode:

return '{} field history for {}'.format(self.field_name, self.object)

fix for python 2.7:

return u'{} field history for {}'.format(self.field_name, self.object)

https://github.com/grantmcconnaughey/django-field-history/blob/master/field_history/models.py#L31

[soloiago]

Same problem here: Python 2.7.10, Django 1.11.5 I tried to fixed it (PR on going), but it seems that it fails with Python 3.2