Turn off some dependencies for library users #581

Job	Run time
Unit Tests (x86_64-unknown-linux-gnu)	25s
Check (x86_64-apple-darwin)	1m 56s
Check (x86_64-unknown-linux-gnu)	32s
Unit Tests (aarch64-unknown-linux-gnu)	1m 17s
Check (x86_64-unknown-linux-musl)	33s
Unit Tests (armv7-unknown-linux-gnueabihf)	1m 23s
Check lib (x86_64-unknown-linux-gnu)	17s
Clippy (x86_64-unknown-linux-gnu)	26s
Check (x86_64-pc-windows-msvc)	1m 25s
Clippy (aarch64-unknown-linux-gnu)	1m 29s
Check lib (aarch64-unknown-linux-gnu)	1m 0s
Check (aarch64-unknown-linux-gnu)	1m 34s
Clippy (armv7-unknown-linux-gnueabihf)	1m 27s
Check lib (armv7-unknown-linux-gnueabihf)	1m 18s
Check (armv7-unknown-linux-gnueabihf)	1m 37s
Check MSRV (x86_64-unknown-linux-gnu)	29s
Check MSRV (aarch64-unknown-linux-gnu)	1m 59s
Rustfmt	8s
Check MSRV (armv7-unknown-linux-gnueabihf)	2m 0s
	21m 15s

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