Workaround for Wheel 0.32.0 API change

WheelFile moved for this release.

See: https://github.com/pypa/wheel/issues/255

supported_wheels.py

@@ -5,7 +5,10 @@ from __future__ import print_function
 
 import sys
 
-from wheel.install import WheelFile
+try:
+    from wheel.install import WheelFile
+except ImportError:  # As of Wheel 0.32.0
+    from wheel.wheelfile import WheelFile
 try:
     from pip.pep425tags import get_supported
 except ImportError:  # pip 10