Re-do "Allow processing square buffers." #1232

Job	Run time
Lint Python (3.12, ubuntu-20.04)	10s
Lint C++	35s
Pre-build on macos-13 with clang	2m 51s
Pre-build on ubuntu-20.04 with clang	1m 54s
Pre-build on ubuntu-20.04 with gcc	1m 33s
Build wheel for ${{ matrix.build }}	0s
Test 1 / 8 with Python 3.12 on ubuntu-20.04	1m 14s
Test 2 / 8 with Python 3.12 on ubuntu-20.04	1m 32s
Test 3 / 8 with Python 3.12 on ubuntu-20.04	1m 48s
Test 4 / 8 with Python 3.12 on ubuntu-20.04	1m 51s
Test 5 / 8 with Python 3.12 on ubuntu-20.04	1m 37s
Test 6 / 8 with Python 3.12 on ubuntu-20.04	2m 10s
Test 7 / 8 with Python 3.12 on ubuntu-20.04	1m 19s
Test 8 / 8 with Python 3.12 on ubuntu-20.04	1m 22s
Test with Python 3.7 + Address Sanitizer	8m 21s
Test with Python 3.8 + Address Sanitizer	8m 49s
Test with Python 3.9 + Address Sanitizer	8m 59s
Test with Python 3.10 + Address Sanitizer	8m 22s
Test with Python 3.11 + Address Sanitizer	8m 13s
Test with Python 3.7 on macos-13	19m 11s
Test with Python 3.8 on macos-13	19m 57s
Test with Python 3.9 on macos-13	19m 0s
Test with Python 3.10 on macos-13	20m 44s
Test with Python 3.11 on macos-13	19m 19s
Test with Python 3.12 on macos-13	19m 58s
Test with Python 3.7 on ubuntu-20.04	5m 42s
Test with Python 3.8 on ubuntu-20.04	6m 3s
Test with Python 3.9 on ubuntu-20.04	6m 7s
Test with Python 3.10 on ubuntu-20.04	6m 22s
Test with Python 3.11 on ubuntu-20.04	5m 59s
Test with Python 3.12 on ubuntu-20.04	5m 18s
Test with Python 3.12 on windows-latest	8m 59s
Upload wheels to PyPI	0s
	3h 45m 19s

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