If you’re a senior and you own a home, a new state law makes it a little easier for you to collect an often-overlooked property tax break that easily can run to hundreds of dollars a year. Under a measure signed yesterday by Gov. J.B. Pritzker, the Senior Citizen Homestead Exemption will be automatically renewed each year after once granted. That means people no longer will have to reapply every year, something that can be forgotten amid other daily concerns. The Cook Count