docs: def queryjoin(argdict=dict(), **kwargs):
      """Turn a dictionary into a querystring for a URL.
      
      >>> args = dict(a=1, b=2, c="foo")
      >>> queryjoin(args)
      "a=1&b=2&c=foo"
      """
      if kwargs: argdict.update(kwargs)
      
      if issubclass(type(argdict), dict):                    
          args = ["{}={}".format(k, v) for k, v in argdict.items() if v != None]
      return "&".join(args)