`Dataset.repr` upgrade #1261

Job	Run time
sdist_verify	16s
allowed-fail-tests / Load tox environments	8s
docs / Load tox environments	8s
tests / Load tox environments	7s
allowed-fail-tests / py311-devdeps (ubuntu-latest)	4m 23s
tests / py312 (ubuntu-latest)	5m 9s
tests / py311 (ubuntu-latest)	3m 36s
tests / py311-online (windows-latest)	5m 22s
tests / py310 (macos-latest)	3m 36s
tests / py310-oldestdeps (ubuntu-latest)	3m 3s
docs / build_docs-notebooks (ubuntu-latest)	4m 29s
publish	0s
notify	0s
	30m 17s

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