Apple Inc. has reached a tentative collective bargaining agreement with retail employees in Maryland, the International Association of Machinists said Friday, a first for the company’s US stores.The deal is subject to approval by the roughly 85 employees in the bargaining unit, who are slated to vote on it Aug. 6. The agreement includes rules about scheduling, severance, and sub-contracting, and requires that any discipline not be “arbitrary, capricious or without merit,” an IAM spokesperson sai...