tests

[ENH] time_histogram handles single `neo.SpikeTrain` #1040

Job	Run time
conda (3.11, macos-13)	1m 9s
conda (3.11, macos-14)	1m 3s
docs (ubuntu-latest)	1m 23s
doctests (3.10, ubuntu-latest)	45s
build-and-test-pip (3.9, ubuntu-latest)	1m 22s
build-and-test-pip (3.10, ubuntu-latest)	1m 23s
test-pip (3.11, windows-latest)	1m 8s
test-conda (3.11, ubuntu-latest)	1m 17s
test-pip-MPI (3.9, ubuntu-latest)	1m 21s
build-and-test-pip (3.11, ubuntu-latest)	1m 21s
build-and-test-pip (3.12, ubuntu-latest)	1m 22s
	13m 34s

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