scilib/ellutil.py: mention np.vectorize for future reference
scibin/ris2rbib: hack for URLs with Harvard's proxy server
scibin/ris2rbib: two more journal name mappings
scibin/ris2rbib: hack for ASP Conference Series items

Things in the ASP Conference Series (e.g., ADASS) are technically published as
proceedings papers, but are referencable like journal articles since they have
straightforward volume numbering. Add a hacky prefiltering stage to transform
the record from 'inproceedings' to 'article' for cleaner citation. We have to
do this before applying journal name mapping since we set the journal name
to the 'series' item.