Add more bytestring like functions #200

Job	Run time
i386	9m 13s
darwin_arm (self-hosted, macOS, ARM64, 8.10.7)	13m 51s
arm (arm32v7)	9m 36s
build (ubuntu-latest, 8.0.2, 3.8.1.0)	20m 2s
darwin_arm (self-hosted, macOS, ARM64, 9.2.6)	9m 44s
arm (arm64v8)	5m 41s
build (ubuntu-latest, 8.2.2, 3.8.1.0)	12m 18s
darwin_arm (self-hosted, macOS, ARM64, 9.4.4)	12m 0s
build (ubuntu-latest, 8.4.4, 3.8.1.0)	8m 46s
build (ubuntu-latest, 8.6.5, 3.8.1.0)	11m 41s
build (ubuntu-latest, 8.8.4, 3.8.1.0)	7m 26s
build (ubuntu-latest, 8.10.7, 3.8.1.0)	9m 4s
build (ubuntu-latest, 9.0.2, 3.8.1.0)	8m 44s
build (ubuntu-latest, 9.2.7, 3.8.1.0)	7m 37s
build (ubuntu-latest, 9.4.5, 3.8.1.0)	7m 11s
build (ubuntu-latest, 9.6.1, 3.8.1.0)	8m 40s
build (macOS-latest, 9.4.5, 3.8.1.0)	17m 50s
build (macOS-latest, 9.6.1, 3.8.1.0)	27m 12s
build (windows-latest, 9.4.5, 3.8.1.0)	21m 13s
build (windows-latest, 9.6.1, 3.8.1.0)	19m 46s
	4h 7m 35s

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