fix contenttypes.generic warning in django 1.7

taggit/managers.py

@@ -2,7 +2,10 @@ from __future__ import unicode_literals
 from operator import attrgetter
 from operator import attrgetter
 
 
 from django import VERSION
 from django import VERSION
-from django.contrib.contenttypes.generic import GenericRelation
+try:
+    from django.contrib.contenttypes.fields import GenericRelation
+except ImportError:  # django < 1.7
+    from django.contrib.contenttypes.generic import GenericRelation
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes.models import ContentType
 from django.db import models, router
 from django.db import models, router
 from django.db.models.fields import Field
 from django.db.models.fields import Field

taggit/models.py

 from __future__ import unicode_literals
 from __future__ import unicode_literals
 
 
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.contenttypes.models import ContentType
-from django.contrib.contenttypes.generic import GenericForeignKey
+try:
+    from django.contrib.contenttypes.fields import GenericForeignKey
+except ImportError:  # django < 1.7
+    from django.contrib.contenttypes.generic import GenericForeignKey
 from django.db import models, IntegrityError, transaction
 from django.db import models, IntegrityError, transaction
 from django.db.models.query import QuerySet
 from django.db.models.query import QuerySet
 from django.template.defaultfilters import slugify as default_slugify
 from django.template.defaultfilters import slugify as default_slugify