Jack Splitt, whose fight with cerebral palsy opened Colorado school doors to medical marijuana treatments, died Wednesday. He was 15. Splitt, who was the inspiration behind “Jack’s Law,” started classes at Wheat Ridge High School last week. Splitt suffered from crippling, debilitating muscle contractions that he dealt with by using cannabis-derived treatment. They worsened Wednesday and he succumbed, said his mother, Stacey Linn. Jack’s mom fought for the right for parents and caregivers to provide cannabis treatments on school grounds for children who are registered medical marijuana patients, and “Jack’s Law” became official this year.