Clean the the revitfile

Hello Dynos,

I do some cleaning-stuff to get better performance in my modells! i have just dynamo 0.9. (Revit2016). So I have not so much access to pachages! But i am already able to clean Materials, Imported patterns! Thanks to the comunity…

…Can I clean also imported categories throue dynamo? …Purge unused? Are there other ways to optimize my revitmodel with dynamo?