message: Add absl-py as direct dependency
diff: @@ -9,6 +9,7 @@ if sys.version_info < (3, 6):
  install_requires = [
  "typing-extensions==3.7.2",
  "numpy==1.16.3",
  + "absl-py==0.7.1",
  "tensorflow-datasets==1.0.2",
  "tensorflow-federated==0.4.0",
  "matplotlib==3.0.3",
  