Minor tweaks.#3230

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rwgk merged 3 commits intopybind:masterfrom

rwgk:quick_tweaks

Aug 31, 2021

Commits on Aug 30, 2021

Minor tweaks.
rwgk
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Restoring tests/pybind11_tests.h version from master, removing just the comment and empty line that was added in PR #3087; those were made obsolete by the pragma cleanup that concluded with PR #3186.
rwgk
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Commits on Aug 31, 2021

[ci skip] Restoring tests/test_enum.py from master.
rwgk
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