Normalize representation usage #68

Job	Run time
doc	16s
minimal-versions	21s
build (stable, dev, ubuntu-latest)	15s
build (stable, dev, ubuntu-latest, --all-features)	31s
build (stable, dev, windows-latest)	1m 41s
build (stable, dev, windows-latest, --all-features)	1m 9s
build (stable, dev, macos-latest)	47s
build (stable, dev, macos-latest, --all-features)	53s
build (stable, release, ubuntu-latest)	24s
build (stable, release, ubuntu-latest, --all-features)	27s
build (stable, release, windows-latest)	2m 5s
build (stable, release, windows-latest, --all-features)	2m 30s
build (stable, release, macos-latest)	1m 35s
build (stable, release, macos-latest, --all-features)	2m 45s
build (nightly, dev, ubuntu-latest)	28s
build (nightly, dev, ubuntu-latest, --all-features)	29s
build (nightly, dev, windows-latest)	52s
build (nightly, dev, windows-latest, --all-features)	1m 14s
build (nightly, dev, macos-latest)	2m 34s
build (nightly, dev, macos-latest, --all-features)	57s
build (nightly, release, ubuntu-latest)	35s
build (nightly, release, ubuntu-latest, --all-features)	33s
build (nightly, release, windows-latest)	1m 6s
build (nightly, release, windows-latest, --all-features)	1m 6s
build (nightly, release, macos-latest)	1m 14s
build (nightly, release, macos-latest, --all-features)	1m 25s
fmt	12s
msrv	2m 31s
	30m 55s

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