Make a gift in honor of the good that comes from BDN journalism in your hands, and help raise $60,000 this spring to support our reporting. Make a donation now. Mad Kat’s in Brewer is for sale again. It’s the latest in a series of ups and downs for the popular Brewer nightspot on North Main Street. It closed on New Year’s in 2025 before reopening that spring as Mack’s Restaurant and Tavern. That iteration was short-lived after the business strug…