Texan post-hardcore outfit I PROMISED THE WORLD packed out Boom in Leeds on Friday evening, to a crowd that had very clearly dressed for the occasion. White studded belts, scene hair, gaudy graphic tees and skinny jeans were everywhere, and walking in felt like stepping into a time machine. This, it seems, is the new br00tal uniform – and if you don’t get it by now, you are massively behind on the times within the culture. Boom is an extremely beloved name in the hardcore sc