double named spells need to be handled in index.js

[omegabytes]

Tight now, I've arbitrarily split up some spell names like enlarge/reduce into spells enlarge and reduce. This is inconsistent with the PHB. We need to anticipate users asking for enlarge/reduce, enlarge, or reduce and make a check against the spells list as such. This is a form of pre-processing that happens in index.