A San Diego pizzeria alleges in a proposed class action lawsuit that Visa, Mastercard and several of the nation’s largest banks have maintained a conspiracy to artificially inflate the fees merchants pay on credit card transactions, despite a more than $5 billion class action settlement in recent years over the same allegedly anticompetitive market restraints.  Want to stay in the loop on class action lawsuits that matter to you? Sign up for ClassAction.org’s free weekly newsletter. The 134-page...