Add more bytestring like functions #204

Job	Run time
arm (arm32v7)	6m 9s
arm (arm64v8)	4m 22s
i386	7m 26s
darwin_arm (self-hosted, macOS, ARM64, 8.10.7)	34m 28s
build (ubuntu-latest, 8.0.2, 3.8.1.0)	28m 25s
darwin_arm (self-hosted, macOS, ARM64, 9.2.6)	24m 15s
build (ubuntu-latest, 8.2.2, 3.8.1.0)	8m 36s
darwin_arm (self-hosted, macOS, ARM64, 9.4.4)	24m 37s
build (ubuntu-latest, 8.4.4, 3.8.1.0)	7m 48s
build (ubuntu-latest, 8.6.5, 3.8.1.0)	8m 34s
build (ubuntu-latest, 8.8.4, 3.8.1.0)	8m 11s
build (ubuntu-latest, 8.10.7, 3.8.1.0)	10m 49s
build (ubuntu-latest, 9.0.2, 3.8.1.0)	8m 5s
build (ubuntu-latest, 9.2.7, 3.8.1.0)	6m 48s
build (ubuntu-latest, 9.4.5, 3.8.1.0)	8m 17s
build (ubuntu-latest, 9.6.1, 3.8.1.0)	8m 46s
build (macOS-latest, 9.4.5, 3.8.1.0)	16m 54s
build (macOS-latest, 9.6.1, 3.8.1.0)	18m 1s
build (windows-latest, 9.4.5, 3.8.1.0)	20m 44s
build (windows-latest, 9.6.1, 3.8.1.0)	18m 28s
	4h 39m 43s

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