For one big retailer, the moving target is heading north. Target Corp. said Thursday that it entered into an agreement with Zellers Inc. that would allow it to open 100 to 150 stores throughout Canada in 2013 and 2014. The Minneapolis-based retailer said it would pay Zellers, a subsidiary of the Hudson’s Bay Company, $1.83 billion Canadian dollars, or $1.85 billion at current exchange, to buy 220 leases. “This transaction provides an outstanding opportunity for us to extend our Targe...