Netflix has delivered Marie Kondo and her KonMari method to our digital doorsteps, dropping an eight-episode season of “Tidying Up With Marie Kondo” on Jan. 1. It’s a U.S. version of her reality show, which follows as she visits messy, cluttered houses and makes them neat again, all while maintaining a perfect, omnipresent smile and her crisp, trademark bangs. She definitely timed it right — January is when many of us think about how we manage our stuff, having accumulated more of it during the preceding holiday season.