Enforce django-polymorphic >= 1.0.1 for Django 1.10.1 compatibility

Author: vdboor

setup.py

@@ -39,7 +39,7 @@ def find_version(*parts):
  license='Apache 2.0',
 
  install_requires=[
- 'django-polymorphic>=1.0',  # needed for Django 1.10 compatibility
+ 'django-polymorphic>=1.0.1', # needed for Django 1.10.1 compatibility
  'django-mptt>=0.7.0', # Still allow 0.7 to have Django 1.6 support
  'django-tag-parser>=2.1', # ensure Django 1.8 compatibility
  'future>=0.12.2',