aarch64-dit: safe, high-level API (#1108) #553

Job	Run time
cross (aarch64-unknown-linux-gnu, 1.60.0)	3m 9s
build (1.60.0, thumbv7em-none-eabi)	2m 51s
cross (aarch64-unknown-linux-gnu, stable)	40s
build (1.60.0, wasm32-unknown-unknown)	2m 56s
cross (powerpc-unknown-linux-gnu, 1.60.0)	3m 5s
build (stable, thumbv7em-none-eabi)	16s
cross (powerpc-unknown-linux-gnu, stable)	34s
test (i686-unknown-linux-gnu, ubuntu-latest, 1.60.0, sudo apt update && sudo apt install gcc-mult...	3m 13s
build (stable, wasm32-unknown-unknown)	20s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.60.0)	2m 54s
test (x86_64-pc-windows-msvc, windows-latest, 1.60.0)	3m 24s
test (x86_64-apple-darwin, macos-latest, 1.60.0)	2m 53s
minimal-versions / minimal-versions	21s
	26m 36s

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