Lil B hasn’t released a new solo mixtape in over a year-and-a-half: an eternity for a man who was once contemporary hip-hop’s most prolific artist. Today, his long-awaited followup to 2015’s Thugged Out Pissed Off has gone live: the Black Ken project. It was initially released, apparently without Lil B’s consent, via DatPiff on Wednesday, but is now…