bmihelac/django-import-export — pull request #180 by am1ty9d9v (2014-11-21 07:29:40+00:00)
Title: Fix when only single value is passed in m2m field

When user enters single value in m2m field, then the split would not work as excel returns a float value and this error is generated AttributeError: 'float' object has no attribute 'split'.

So to fix it, we can make it a `str` or make a list directly in except block.