The Yankees’ division rivals have been actively preparing for the hot stove to ignite after the Thanksgiving weekend. In many ways, the Thanksgiving holiday represents the first major milestone in the offseason. Last year, with teams trying to get their business done trying to the institution of the lockout in early December, it represented a warning bell that transactions were about to be frozen, so get those trades processed and contracts signed while you still can. In a more normal year, such as we are currently in, it is the starting bell. Up until this point, only a couple of…