def perform
      future do
        status, headers, body = call(rack_env_defaults)
        response = Weary::Response.new body, status, headers
        yield response if block_given?
        response
      end
    end
def perform
      future do
        status, headers, body = call(rack_env_defaults)
        response = Weary::Response.new body, status, headers
        yield response if block_given?
        response
      end
    end
Returns a future-wrapped Response.