Now that int is subclassable, have to change a test that tests for non-subclassability.  (More tests for number subclassing should follow.)
Now that int is subclassable, have to change a test that tests for
non-subclassability.  (More tests for number subclassing should follow.)

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator