Capping off a monumental 2016 which culminated in his fourth studio album, Konnichiwa, winning the Mercury Prize (or, the award for the best album from the United Kingdom and Ireland), Skepta has released a documentary on his life and times, Greatness Only. The trailer for @Skepta’s Greatness Only documentary is here. ? pic.twitter.com/9Bh4sAi51K — SBTV…