Sourced from pytest-mock's changelog.

3.5.0 (2021-01-04)

• Now all patch functions will emit a warning instead of raising a ValueError when used as a context-manager. Thanks @iforapsy for the PR (#221).
• Additionally, mocker.patch.context_manager is available when the user intends to mock a context manager (for example threading.Lock object), which will not emit that warning.

3.4.0 (2020-12-15)

• Add mock.seal alias to the mocker fixture (#211). Thanks @coiax for the PR.

• Fixed spying on exceptions not covered by the Exception superclass (#215), like KeyboardInterrupt -- PR #216 by @webknjaz.

  Before the fix, both spy_return and spy_exception were always assigned to None whenever such an exception happened. And after this fix, spy_exception is set to a correct value of an exception that has actually happened.

• cdd5d70 Update context-manager docs and prepare for 3.5.0
• f623fa8 Warn instead of raising exception in context manager (#221)
• 5f6cab7 Merge pull request #220 from webknjaz/docs/216-changelog
• 9771def Fix typos in a change note for the PR #216
• d4e3f3e Merge pull request #208 from pytest-dev/graingert-patch-1
• 252eba8 Merge pull request #219 from nicoddemus/release-3.4.0
• df9ec17 Prepare release 3.4.0
• 91b4afb Add testing for Python 3.9 (#218)
• 9640a36 Merge pull request #216 from webknjaz/bugfixes/215-spy-on-keyboard-interrupt
• 0e6b221 Ensure all the exceptions cat be spied on
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