A new season of Supergirl means a new season of roundtables where Fangirlish writers Alyssa, Lizzie, and Lyra discuss the hot topics from every Supergirl episode. In the second episode of Supergirl’s second season, Kara and Clark continued their team-up as Cadmuns unleashed a Kryptonite-powered metahuman of sorts on National City. Kara also started her…