Tests

Refactor imports to use macros for static casts and improve code organization #992

Job	Run time
test (ubuntu-latest, -C target-feature=-avx2)	3m 6s
test (windows-latest, -C target-feature=-avx2,-pclmulqdq)	4m 57s
test-wasm	5m 30s
test (windows-latest)	5m 9s
test (ubuntu-latest, -C target-feature=-avx2,-pclmulqdq)	3m 0s
test (windows-latest, -C target-feature=-avx2)	5m 19s
test (macOS-latest)	4m 0s
test (ubuntu-latest)	3m 6s
test (macOS-latest, -C target-feature=-avx2)	3m 42s
test (macOS-latest, -C target-feature=-avx2,-pclmulqdq)	3m 39s
	41m 28s

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