tests

Pruning Improvements and Voxel Regions + Bugfix & Cleanup #251

Job	Run time
test (3.8, ubuntu-latest, test)	8m 31s
test (3.8, ubuntu-latest, test-full)	9m 55s
test (3.8, windows-latest, test)	11m 30s
test (3.8, windows-latest, test-full)	14m 43s
test (3.9, ubuntu-latest, test)	8m 34s
test (3.9, ubuntu-latest, test-full)	10m 31s
test (3.9, windows-latest, test)	11m 58s
test (3.9, windows-latest, test-full)	14m 1s
test (3.10, ubuntu-latest, test)	8m 47s
test (3.10, ubuntu-latest, test-full)	10m 6s
test (3.10, windows-latest, test)	11m 15s
test (3.10, windows-latest, test-full)	14m 52s
test (3.11, ubuntu-latest, test)	8m 18s
test (3.11, ubuntu-latest, test-full)	10m 25s
test (3.11, windows-latest, test)	11m 20s
test (3.11, windows-latest, test-full)	14m 46s
test (3.12, ubuntu-latest, test)	8m 51s
test (3.12, ubuntu-latest, test-full)	19m 11s
test (3.12, windows-latest, test)	11m 36s
test (3.12, windows-latest, test-full)	18m 1s
check-format / check	14s
	3h 57m 25s

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