Add missing Model attributes

Author: Michał Gorynia

pylint_django/augmentations/__init__.py

@@ -152,7 +152,15 @@
 
 
 MODEL_ATTRS = {
+    'DoesNotExist',
+    'MultipleObjectsReturned',
+    '_base_manager',
+    '_default_manager',
+    '_meta',
     'delete',
+    'get_next_by_date',
+    'get_previous_by_date',
+    'objects',
     'save',
 }