Tests

Replace `block` module with helper functions #71

Job	Run time
Check Clippy and rustfmt	15s
Check doc	13s
test-cross (ubuntu-latest, powerpc-unknown-linux-gnu, stable)	34s
test (windows-latest, x86_64-pc-windows-msvc, beta)	38s
test (macos-latest, x86_64-apple-darwin, stable)	19s
test (ubuntu-latest, x86_64-unknown-linux-gnu, stable)	16s
test (windows-latest, x86_64-pc-windows-gnu, stable)	47s
test (ubuntu-latest, x86_64-unknown-linux-gnu, MSRV, 1.85.0)	17s
test (ubuntu-latest, sudo apt-get update ; sudo apt install gcc-multilib, i686-unknown-linux-gnu,...	30s
test-ios	17s
test (ubuntu-latest, x86_64-unknown-linux-gnu, nightly, minimal_versions)	16s
test-miri	34s
test-no-std	13s
	5m 9s

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