The script is now in beta stage. It can do:
Extremely stiff materials at relatively low substeps
Granulars of all kinds (dry, moist, wet . . .)
C++ porting pending. Cant wait :)
I really have to say Im damn happy with it. It outperforms the native elastics by far. It is more stable and faster (even single threaded). Very customizable and with a good balance between number of parameters to tweak and ease of use. More previews and tests will be uploaded.