Merge pull request #512 from Shnatsel/autovec-paeth-but-simd #577

Job	Run time
rustfmt	5s
powerpc_cross	10s
feature_check	57s
build (1.57.0, ubuntu-latest)	1m 27s
feature_check (benchmarks)	57s
build (1.57.0, windows-latest)	1m 40s
test_all	3m 3s
build (1.57.0, macos-latest)	1m 17s
build (stable, ubuntu-latest)	9s
build (stable, windows-latest)	41s
build (stable, macos-latest)	11s
build (beta, ubuntu-latest)	16s
build (beta, windows-latest)	31s
build (beta, macos-latest)	16s
build (nightly, ubuntu-latest)	13s
build (nightly, windows-latest)	30s
build (nightly, macos-latest)	16s
	12m 39s

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