Add more bytestring like functions #196

Job	Run time
i386	9m 22s
darwin_arm (self-hosted, macOS, ARM64, 8.10.7)	6m 8s
darwin_arm (self-hosted, macOS, ARM64, 9.2.6)	3m 9s
arm (arm32v7)	4m 3s
build (ubuntu-latest, 8.0.2, 3.8.1.0)	4m 18s
darwin_arm (self-hosted, macOS, ARM64, 9.4.4)	5m 17s
arm (arm64v8)	3m 48s
build (ubuntu-latest, 8.2.2, 3.8.1.0)	4m 7s
build (ubuntu-latest, 8.4.4, 3.8.1.0)	3m 56s
build (ubuntu-latest, 8.6.5, 3.8.1.0)	3m 56s
build (ubuntu-latest, 8.8.4, 3.8.1.0)	4m 22s
build (ubuntu-latest, 8.10.7, 3.8.1.0)	5m 31s
build (ubuntu-latest, 9.0.2, 3.8.1.0)	4m 16s
build (ubuntu-latest, 9.2.7, 3.8.1.0)	3m 45s
build (ubuntu-latest, 9.4.5, 3.8.1.0)	3m 53s
build (ubuntu-latest, 9.6.1, 3.8.1.0)	3m 59s
build (macOS-latest, 9.4.5, 3.8.1.0)	6m 21s
build (macOS-latest, 9.6.1, 3.8.1.0)	5m 3s
build (windows-latest, 9.4.5, 3.8.1.0)	4m 45s
build (windows-latest, 9.6.1, 3.8.1.0)	5m 11s
	1h 35m 10s

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