code: function off(type, handler) {
                  if (all[type]) {
                      all[type].splice(all[type].indexOf(handler) >>> 0, 1);
                  }
              }
docs: Remove an event handler for the given type.
  
  @param  {String} type	Type of event to unregister `handler` from, or `"*"`
  @param  {Function} handler Handler function to remove
  @memberOf mitt