added new line at EOF

utils/exporters/blender/addons/io_three/constants.py

@@ -393,4 +393,4 @@ EXPORT_SETTINGS_KEY = 'threeExportSettings'
 XZ_Y = "XZ_Y"
 X_ZY = "X_ZY"
 XYZ = "XYZ"
-_XY_Z = "_XY_Z"
+_XY_Z = "_XY_Z"