feat & refactor(!): Change Default Blocking Handle Behavior & Add Basic Read Op #703

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	6m 18s
test (x86_64-unknown-linux-gnu, nightly)	8m 45s
test (aarch64-unknown-linux-gnu, stable)	2m 43s
test (aarch64-unknown-linux-gnu, nightly)	6m 17s
test (armv7-unknown-linux-gnueabihf, stable)	2m 43s
test (armv7-unknown-linux-gnueabihf, nightly)	3m 59s
test (riscv64gc-unknown-linux-gnu, stable)	2m 26s
test (riscv64gc-unknown-linux-gnu, nightly)	3m 56s
test (s390x-unknown-linux-gnu, stable)	2m 26s
test (s390x-unknown-linux-gnu, nightly)	3m 59s
test (x86_64-apple-darwin, stable)	1m 55s
test (x86_64-apple-darwin, nightly)	5m 35s
test (aarch64-apple-darwin, stable)	3m 40s
test (aarch64-apple-darwin, nightly)	4m 28s
test (x86_64-pc-windows-gnu, stable)	5m 18s
test (x86_64-pc-windows-gnu, nightly)	4m 31s
test (x86_64-pc-windows-msvc, stable)	6m 5s
test (x86_64-pc-windows-msvc, nightly)	7m 13s
test (i686-pc-windows-gnu, stable)	7m 29s
test (i686-pc-windows-gnu, nightly)	10m 36s
test (i686-pc-windows-msvc, stable)	3m 58s
test (i686-pc-windows-msvc, nightly)	6m 41s
	1h 51m 1s

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