message: Add dependency on google_pasta (freshly minted on pypi).
diff: @@ -51,6 +51,7 @@ REQUIRED_PACKAGES = [
  'absl-py >= 0.1.6',
  'astor >= 0.6.0',
  'gast >= 0.2.0',
  + 'google_pasta >= 0.1.0',
  'keras_applications >= 1.0.6',
  'keras_preprocessing >= 1.0.5',
  'numpy >= 1.13.3',
  