The Oxford High School school shooter is eligible to spend the rest of his life in prison, an Oakland County, Michigan, judge ruled Friday. Ethan Crumbley faced either life without parole or a term of years, which must be a minimum of 25 to 40 years and a maximum of 60 years. He pleaded guilty last year to killing Tate Myre, 16; Madisyn Baldwin, 17; Hana St. Juliana, 14; and Justin Shilling, 17;…