Updated to work with 0.13

- This is _totally_ experimental, and I haven't done exhaustive
   tests
 - 88 unit tests do pass though, and I added a new import test.
 - 0.12 and 0.13 seem to structure stuff a bit differently,
   probably due to changes in the FreeCAD lib wrappers.
 - Not tested on windows (but should work) or 0.12. Need some
   help there.

tests/TestCadObjects.py

@@ -3,9 +3,15 @@ import sys
 
 import unittest
 from tests import BaseTest
-import FreeCAD
+
+from cadquery.freecad_impl.verutil import fc_import
+FreeCAD = fc_import("FreeCAD")
+if not hasattr(FreeCAD, 'Part'):
+    FreeCAD.Part = fc_import("FreeCAD.Part")
+
+
 from cadquery import *
-	
+
 class TestCadObjects(BaseTest):
 
     def testVectorConstructors(self):
@@ -57,6 +63,6 @@ class TestCadObjects(BaseTest):
     def testVertices(self):
         e = Shape.cast(FreeCAD.Part.makeLine((0,0,0),(1,1,0)))
         self.assertEquals(2,len(e.Vertices()))
-		
+
 if __name__ == '__main__':
-    unittest.main()		
+    unittest.main()