The late-night/early-morning spot for Cubs fans asks whether the team should tender Zach McKinstry a contract. Welcome back to BCB After Dark: the end-of-the-season after-party for night owls, early-risers, new parents and Cubs fans abroad. So glad to see you stop in this evening for our end of the year celebration. We’re celebrating whether the season was worth celebrating or not. The big thing is that we got through it. Together. We still have a few tables left in the front. There’s no cover charge and the dress code is casual. Bring your own beverage. BCB After Dark is the…