feat & refactor(!): Change Default Blocking Handle Behavior & Add Basic Read Op #699

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	23s
test (x86_64-unknown-linux-gnu, nightly)	25s
test (aarch64-unknown-linux-gnu, stable)	42s
test (aarch64-unknown-linux-gnu, nightly)	22s
test (armv7-unknown-linux-gnueabihf, stable)	22s
test (armv7-unknown-linux-gnueabihf, nightly)	24s
test (riscv64gc-unknown-linux-gnu, stable)	22s
test (riscv64gc-unknown-linux-gnu, nightly)	36s
test (s390x-unknown-linux-gnu, stable)	27s
test (s390x-unknown-linux-gnu, nightly)	24s
test (x86_64-apple-darwin, stable)	40s
test (x86_64-apple-darwin, nightly)	27s
test (aarch64-apple-darwin, stable)	28s
test (aarch64-apple-darwin, nightly)	25s
test (x86_64-pc-windows-gnu, stable)	1m 14s
test (x86_64-pc-windows-gnu, nightly)	1m 5s
test (x86_64-pc-windows-msvc, stable)	2m 47s
test (x86_64-pc-windows-msvc, nightly)	1m 16s
test (i686-pc-windows-gnu, stable)	1m 39s
test (i686-pc-windows-gnu, nightly)	1m 44s
test (i686-pc-windows-msvc, stable)	2m 46s
test (i686-pc-windows-msvc, nightly)	1m 19s
	20m 17s

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