Cheerleading has long been sideline entertainment, but now has finally attained its hard-earned spotlight with “Cheer,” a six-episode Netflix documentary series. The episodes follow the Navarro College cheerleading team through a period lovingly called “Daytona Season,” referring to the National Cheerleaders Association (NCA) Collegiate Cheer Championship in Daytona, Florida. Along the way, the series chronicles the life stories of the athletes.