Earlier code would break forfused aromatic code with radical

One of the resonance isomers will have fused rings
with one ring classified as aromatic and second as
non aromatic but with C adjacent to ring having double bond

This would cause the adj list to be C {*,B} {*,B} {*,D}
causing the valency to fail. We now convert the other ring
to be classified as non-aromatic too.

This is for academic interest .... since aron thinks
the most stable isomers will have both rings as
aromatic.