check

Mark `AccComplex::from_ptr` as `unsafe` #191

Job	Run time
stable / fmt	13s
nightly / doc (thumbv7em-none-eabihf)	35s
stable / clippy	31s
ubuntu / stable / features (thumbv7em-none-eabihf)	1m 9s
beta / clippy	32s
ubuntu / 1.80	54s
	3m 54s

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