message: version update to 1.5.0
diff: @@ -29,7 +29,7 @@ from setuptools.dist import Distribution
  # This version string is semver compatible, but incompatible with pip.
  # For pip, we will remove all '-' characters from this string, and use the
  # result for pip.
  -_VERSION = '1.5.0-rc1'
  +_VERSION = '1.5.0'
  REQUIRED_PACKAGES = [
  'absl-py >= 0.1.6',
  