ECHO004 - word literals are not sorted


why:

  word and name literal collections are easier to scan when sorted
  alphabetically.


bad:

  ["b", "a"]
  (zeta, alpha, beta)
  {"b": 1, "a": 2}
  {"b", "a"}


good:

  ["a", "b"]
  (alpha, beta, zeta)
  {"a": 2, "b": 1}
  {"a", "b"}


skipped:

  type annotations
  pytest.mark.parametrize / pytest.param argument trees
