This end-of-summer edition of dining news around Dallas feels transitional, even a little wistful, with early hints of fall — AKA pumpkin — in the air. There's some real firsts here: a smoothie chain expanding into food, a chocolate shop expanding into the airport, and a burger chain adding a smashburger to its permanent menu. See you in September! Here's what's happening in Dallas restaurant news: Smoothie King has launched “Power Eats” — its first food menu. Items include Peanut B...