NEWS - platform/external/python/mock - Gitiles

 - Issue #15323: improve failure message of Mock.assert_called_once_with

 - Issue #14857: fix regression in references to PEP 3135 implicit __class__
   closure variable (Reopens issue #12370)

 - Issue #14295: Add unittest.mock
	- Issue #15323: improve failure message of Mock.assert_called_once_with

	- Issue #14857: fix regression in references to PEP 3135 implicit __class__
	closure variable (Reopens issue #12370)

	- Issue #14295: Add unittest.mock