Rules for adding weapon types

@jstormtrackerAre there rules for adding weapon types to the game? The Chakram for example. Would this be Slasing or Piercing. What damage? stabbing weapon is piercing, otherwise slashing. find closest comp in size/weight and use that damage die

— Mike Mearls (@mikemearls) August 11, 2015

@jstormtracker also, if it requires training it's a martial weapon, otherwise simple

— Mike Mearls (@mikemearls) August 11, 2015