Add a changelog check in CI #386

Job	Run time
Check (x86_64-apple-darwin)	50s
Check (x86_64-unknown-linux-gnu)	33s
Clippy (x86_64-unknown-linux-gnu)	1m 4s
Check (x86_64-unknown-linux-musl)	58s
Check MSRV (x86_64-unknown-linux-gnu)	45s
Clippy (aarch64-unknown-linux-gnu)	2m 14s
Check (x86_64-pc-windows-msvc)	2m 24s
Check lib (x86_64-unknown-linux-gnu)	30s
Clippy (armv7-unknown-linux-gnueabihf)	1m 40s
Check MSRV (aarch64-unknown-linux-gnu)	2m 2s
Check lib (aarch64-unknown-linux-gnu)	1m 50s
Check (aarch64-unknown-linux-gnu)	1m 34s
Check MSRV (armv7-unknown-linux-gnueabihf)	1m 44s
Check (armv7-unknown-linux-gnueabihf)	2m 4s
Check lib (armv7-unknown-linux-gnueabihf)	1m 13s
Rustfmt	6s
Unit Tests (x86_64-unknown-linux-gnu)	41s
Unit Tests (aarch64-unknown-linux-gnu)	1m 40s
Unit Tests (armv7-unknown-linux-gnueabihf)	2m 1s
	25m 53s

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