22.5.0

Features:

• Introduce Y039: Use str instead of typing.Text for Python 3 stubs.
• Teach the Y036 check that builtins.object (as well as the unqualified object) is acceptable as an annotation for an __(a)exit__ method argument.
• Teach the Y029 check to emit errors for __repr__ and __str__ methods that return builtins.str (as opposed to the unqualified str).
• Introduce Y040: Never explicitly inherit from object in Python 3 stubs.