Turn off some dependencies for library users #577

Job	Run time
Check MSRV (x86_64-unknown-linux-gnu)	29s
Check lib (x86_64-unknown-linux-gnu)	35s
Clippy (x86_64-unknown-linux-gnu)	48s
Check MSRV (aarch64-unknown-linux-gnu)	1m 38s
Check lib (aarch64-unknown-linux-gnu)	1m 16s
Clippy (aarch64-unknown-linux-gnu)	1m 57s
Check (x86_64-apple-darwin)	1m 25s
Check lib (armv7-unknown-linux-gnueabihf)	1m 23s
Check MSRV (armv7-unknown-linux-gnueabihf)	1m 30s
Clippy (armv7-unknown-linux-gnueabihf)	1m 24s
Check (x86_64-unknown-linux-gnu)	38s
Unit Tests (x86_64-unknown-linux-gnu)	26s
Check (x86_64-unknown-linux-musl)	53s
Rustfmt	8s
Check (x86_64-pc-windows-msvc)	1m 38s
Unit Tests (aarch64-unknown-linux-gnu)	1m 15s
Check (aarch64-unknown-linux-gnu)	1m 42s
Unit Tests (armv7-unknown-linux-gnueabihf)	1m 33s
Check (armv7-unknown-linux-gnueabihf)	1m 42s
	22m 20s

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