Toxiclibs mainly just works with processing-2.0 (being largely implementation agnostic). There may be packages that you now need to explicitly import (such as Iterators etc.) to run some examples, but I found I can run many examples without any change.

I haven't actually really delved into it yet, I suppose the best thing to do is just try a few of the examples with Processing 2.0. Any idea if the library itself is still in active development?