Merge pull request #453 from dezgeg/ps_fields #1747

Job	Run time
Test each util separately (macOS-latest)	51s
cargo check (ubuntu-latest)	44s
Test each util separately (windows-latest)	3m 25s
cargo check (windows-latest)	2m 13s
Test each util separately (ubuntu-latest)	1m 8s
cargo test (windows-latest)	2m 32s
cargo check (macOS-latest)	34s
Code Coverage (macos-latest, macos)	1m 51s
cargo test (ubuntu-latest)	1m 3s
Code Coverage (windows-latest, windows)	5m 14s
Code Coverage (ubuntu-latest, unix)	2m 9s
cargo test (macOS-latest)	49s
	22m 33s

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