google-api-core 0.1.2

on Python PyPI

• Upgrading concurrent.futures backport from >= 3.0.0
  to >= 3.2.0 (#4521).
• Moved datetime-related helpers from google.cloud.core to
  google.api_core.datetime_helpers (#4399).
• Added missing client_info to gapic_v1/__init__.py's
  __all__ (#4567).
• Added helpers for routing headers to gapic_v1 (#4336).

PyPI: https://pypi.org/project/google-api-core/0.1.2/