Can't sort things by ID as a surrogate for sorting by creation order
Can't sort numerically be ID anymore
Instead of picking the "latest" library, exit when there are more than one with the given name

As part of the postgres-id-sorting change, we can't rely on the "highest" ID
being the newest thing anymore.  There's no obvious time associated with a
library so no good way to keep the old behavior, which seems bad anyway