Tests

Update documentation (#1275) #3111

Job	Run time
clippy	1m 18s
check std	26s
check serde	26s
check no-default-features	30s
docs	1m 34s
fmt	12s
test stable --no-default-features	1m 5s
test no_std	23s
test stable	54s
test stable --all-features	1m 33s
test beta --no-default-features	54s
test beta	1m 3s
test beta --all-features	1m 28s
test nightly --no-default-features	54s
test nightly	54s
test nightly --all-features	1m 23s
	14m 57s

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