Merge https://github.com/appleseedhq/appleseed
Merge https://github.com/appleseedhq/appleseed
Add ability to assign materials to both sides of an object instance at once
Merge https://github.com/appleseedhq/appleseed
avoid changes to object instance
Merge pull request #338 from DaviesX/master

Add ability to assign materials to both sides of an object instance at once