Factory workers at the Canton, Mississippi Nissan plant will be offered voluntary buyout packages in a cost cutting move by the Japanese auto maker. The buyouts are targeted at production lines in Canton and Smyrna, Tennessee. The separation package details will go out to eligible employees in February, and shift changes will begin in April. Madison County Economic Development Authority executive director Joey Deason said he is not surprised at the announcement that will impact the 4,500-employee, 1,400-acre Canton plant. Deason confirmed the news to the Clarion Ledger after talking with Nissan officials Wednesday afternoon. “As I have said…..