cast6

Release aes v0.9.0 #289

Job	Run time
test (stable)	26s
minimal-versions / minimal-versions	26s
build (1.85.0, wasm32-unknown-unknown)	16s
build (stable, thumbv7em-none-eabi)	18s
build (stable, wasm32-unknown-unknown)	20s
test (1.85.0)	22s
build (1.85.0, thumbv7em-none-eabi)	17s
	2m 25s

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