Build improvements (#125) #718

Job	Run time
rustfmt	7s
Test stable ubuntu-latest --no-default-features	1m 35s
Test stable ubuntu-latest	1m 49s
Test stable ubuntu-latest --all-features	1m 59s
Test stable macos-latest --no-default-features	2m 31s
Test stable macos-latest	6m 25s
Test stable macos-latest --all-features	3m 18s
Test stable windows-latest --no-default-features	5m 21s
Test stable windows-latest	4m 44s
Test stable windows-latest --all-features	4m 6s
Test beta ubuntu-latest --all-features	2m 2s
Test nightly ubuntu-latest --all-features	2m 14s
Release x86_64-unknown-linux-gnu	1m 3s
Release aarch64-unknown-linux-gnu	1m 18s
Release armv7-unknown-linux-gnueabihf	1m 5s
Release arm-unknown-linux-gnueabihf	1m 13s
Release riscv64gc-unknown-linux-gnu	1m 4s
Release x86_64-apple-darwin	3m 21s
Release aarch64-apple-darwin	2m 10s
Release x86_64-pc-windows-msvc	1m 50s
Release aarch64-pc-windows-msvc	4m 18s
	53m 33s

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