Prevent dataset to break if already exists #81

Job	Run time
check-precommit / pre-commit	18s
check-docs / make-docs (html)	1m 52s
check-docs / make-docs (doctest)	2m 12s
check-docs / make-docs (linkcheck)	1m 33s
check-package / init-store	5s
check-typing / mypy	2m 33s
check-schema / schema	13s
check-package / pkg-build (ubuntu-latest)	22s
check-package / pkg-check (ubuntu-latest, 3.8)	1m 38s
check-package / pkg-check (ubuntu-latest, 3.10)	2m 20s
check-package / pkg-check (macos-latest, 3.8)	3m 58s
check-package / pkg-check (macos-latest, 3.10)	3m 7s
check-package / pkg-check (windows-latest, 3.8)	4m 24s
check-package / pkg-check (windows-latest, 3.10)	5m 42s
check-package / pkg-guardian	1s
	30m 18s

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