Fix required features #365

Job	Run time
Check lib (x86_64-unknown-linux-gnu)	2m 38s
Check lib (aarch64-unknown-linux-gnu)	1m 16s
Clippy (x86_64-unknown-linux-gnu)	2m 45s
Check MSRV (x86_64-unknown-linux-gnu)	2m 58s
Check lib (armv7-unknown-linux-gnueabihf)	1m 10s
Clippy (aarch64-unknown-linux-gnu)	1m 33s
Check (x86_64-apple-darwin)	4m 0s
Check MSRV (aarch64-unknown-linux-gnu)	2m 3s
Clippy (armv7-unknown-linux-gnueabihf)	2m 6s
Check (x86_64-unknown-linux-gnu)	42s
Check MSRV (armv7-unknown-linux-gnueabihf)	2m 6s
Rustfmt	2m 25s
Check (x86_64-unknown-linux-musl)	2m 49s
Check (x86_64-pc-windows-msvc)	5m 5s
Unit Tests (x86_64-unknown-linux-gnu)	2m 55s
Check (aarch64-unknown-linux-gnu)	1m 34s
Unit Tests (aarch64-unknown-linux-gnu)	1m 25s
Check (armv7-unknown-linux-gnueabihf)	1m 34s
Unit Tests (armv7-unknown-linux-gnueabihf)	1m 22s
	42m 26s

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