message: Remove new Buffer from tests
diff: @@ -45,7 +45,7 @@ function setup () {
  test('streaming', function (t) {
  var isntance = blake2b(blake2b.BYTES)
  - var buf = new Buffer('Hej, Verden')
  + var buf = Buffer.from('Hej, Verden')
  for (var i = 0; i < 10; i++) isntance.update(buf)
  @@ -61,7 +61,7 @@ function setup () {
  key.fill('lo')
  var instance = blake2b(blake2b.BYTES, key)
  - var buf = new Buffer('Hej, Verden')
  + var buf = Buffer.from('Hej, Verden')
  for (var i = 0; i < 10; i++) instance.update(buf)
  @@ -74,7 +74,7 @@ function setup () {
  test('streaming with hash length', function (t) {
  var isntance = blake2b(blake2b.BYTES_MIN)
  - var buf = new Buffer('Hej, Verden')
  + var buf = Buffer.from('Hej, Verden')
  for (var i = 0; i < 10; i++) isntance.update(buf)
  @@ -90,7 +90,7 @@ function setup () {
  key.fill('lo')
  var instance = blake2b(blake2b.BYTES_MIN, key)
  - var buf = new Buffer('Hej, Verden')
  + var buf = Buffer.from('Hej, Verden')
  for (var i = 0; i < 10; i++) instance.update(buf)
  