Reviewed by Steven G. Kellman              Karen Russell’s debut novel, Swamplandia!, the exuberant account of an alligator-wrestling theme park in southwest Florida, appeared 14 years ago. Her second novel, published now, is also imbued with a vivid sense of place, except that, instead of the author’s native Sunshine State, the setting for The Antidote is 1935 Uz, Nebraska – during …