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Ferric `--verbose` `--concurrency` and `--clean` #922

Job	Run time
Lint	2m 10s
Unit tests (windows-latest)	7m 59s
Unit tests (ubuntu-latest)	5m 7s
Test ferric Apple triplets	4m 8s
Unit tests (macos-latest)	7m 26s
Test app (macOS)	0s
Test app (Android)	0s
Weak Node-API tests (${{ matrix.runner }})	0s
Test app (iOS)	0s
	26m 50s

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