Tests

avoiding singularities #178

Job	Run time
Verify Towncrier entry added	7s
ubuntu-latest, python3.11, defaults	32m 52s
ubuntu-latest, python3.12, p312 numpy 2	25m 49s
ubuntu-latest, python3.10, p310 numpy 1.22	25m 8s
ubuntu-latest, python3.12, p312, numpy fallback	34m 39s
ubuntu-latest, python3.10, p310 no mkl	23m 49s
macos-12, python3.12, macos	35m 12s
macos-12, python3.11, macos - numpy fallback	30m 12s
windows-latest, python3.11, Windows	33m 46s
windows-latest, python3.10, Windows - numpy fallback	1h 0m 29s
Finalise coverage reporting	0s
	5h 2m 3s

Provide feedback