Return actual bytes instead of list of ints for BYTEA type #83

Job	Run time
musllinux (x86_64-unknown-linux-musl)	5m 49s
macos (x86_64)	6m 25s
sdist	18s
musllinux (i686-unknown-linux-musl)	5m 52s
linux (x86_64)	7m 0s
macos (aarch64)	6m 29s
linux (x86)	9m 54s
linux (aarch64)	6m 48s
windows (x64)	16m 32s
linux (armv7)	7m 17s
windows (x86)	13m 40s
linux (s390x)	7m 11s
linux (ppc64le)	6m 37s
Release	4m 58s
	1h 44m 50s

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