Using the following class layout:

class A (object):
	def a (self):
		"A.a"
		pass
class B (A):
	def b (self):
		"B.b"
		pass

If sphinx.ext.autodoc is used to extract documentation, the entry for
class B will have subentries for both the a() and b() methods. This is
unnecessary clutter. It would be nice if the inherited method was
skipped when documenting B, or even better if it was inserted as a
"stub" linking to the documentation for A.a().