Raise more informative error message when data with a large z-spacing… #405

Job	Run time
Check Manifest	29s
Check Linting	14s
Run brainmapper tests to check for breakages	9m 58s
Run package tests (ubuntu-latest, 3.9)	7m 4s
Run tests with numba disabled	15m 33s
Run package tests (ubuntu-latest, 3.10)	7m 4s
Run package tests (macos-latest, 3.10)	12m 16s
Run package tests (windows-latest, 3.10)	9m 50s
Build source distribution and wheel	1s
Publish build distributions	1s
	1h 2m 30s

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