Right before 1.12, I arranged an API around an np.ndarray subclass, making use of __array_ufunc__ to customize behavior based on structured dtype (we come from c++ and really like operator overloading). Having seen __array_ufunc__ featured in Travis Oliphant's Guide to NumPy: 2nd Edition, I assumed this was the way to go. But it was removed in 1.12. Now that 1.13 has reintroduced __array_ufunc__, can I now rely on its continued availability? I am considering using it as a base-level component in several libraries... is this a dangerous idea? Thanks! Will -- William H. Sheffler Ph.D. Principal Engineer Institute for Protein Design University of Washington