Merge pull request #29 from Kainmueller-Lab/fix_schuerch #61

Job	Run time
Build / Wheels and Source Distribution	18s
Test / ubuntu-latest - 3.11	3m 8s
Test / macos-13 - 3.11	3m 49s
Test / windows-latest - 3.11	5m 37s
	12m 52s

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