Preliminary Django 6.1 support

modelcluster/fields.py

@@ -451,7 +451,7 @@ def clear(self):
             """
             self.set([])
 
-        def set(self, objs, bulk=True, clear=False):
+        def set_base(self, objs, bulk=True, clear=False, through_defaults=None, raw=False):
             # cast objs to a list so that:
             # 1) we can call len() on it (which we can't do on, say, a queryset)
             # 2) if we need to sort it, we can do so without mutating the original
@@ -472,6 +472,9 @@ def set(self, objs, bulk=True, clear=False):
 
             cluster_related_objects[relation_name] = objs
 
+        def set(self, objs, *, clear=False, through_defaults=None):
+            self.set_base(objs, clear=clear, through_defaults=through_defaults)
+
         def remove(self, *items_to_remove):
             """
             Remove the passed items from the stored object set, but do not commit the change

modelcluster/queryset.py

@@ -556,3 +556,4 @@ def __len__(self):
         return len(self.results)
 
     ordered = True  # results are returned in a consistent order
+    totally_ordered = True