Allow processing square buffers. #1151

Job	Run time
Lint C++	35s
Lint Python (3.12, ubuntu-20.04)	13s
Pre-build on macos-13 with clang	2m 11s
Pre-build on ubuntu-20.04 with clang	1m 41s
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 20s
Test 2 / 8 with Python 3.12 on ubuntu-20.04	1m 21s
Test 3 / 8 with Python 3.12 on ubuntu-20.04	1m 21s
Test 4 / 8 with Python 3.12 on ubuntu-20.04	1m 39s
Test 5 / 8 with Python 3.12 on ubuntu-20.04	1m 11s
Test 6 / 8 with Python 3.12 on ubuntu-20.04	1m 23s
Test 7 / 8 with Python 3.12 on ubuntu-20.04	1m 28s
Test 8 / 8 with Python 3.12 on ubuntu-20.04	1m 16s
Test with Python 3.7 + Address Sanitizer	7m 34s
Test with Python 3.8 + Address Sanitizer	8m 28s
Test with Python 3.9 + Address Sanitizer	8m 27s
Test with Python 3.10 + Address Sanitizer	8m 32s
Test with Python 3.11 + Address Sanitizer	8m 2s
Test with Python 3.7 on macos-13	10m 38s
Test with Python 3.8 on macos-13	11m 37s
Test with Python 3.9 on macos-13	10m 18s
Test with Python 3.10 on macos-13	9m 21s
Test with Python 3.11 on macos-13	9m 39s
Test with Python 3.12 on macos-13	10m 24s
Test with Python 3.7 on ubuntu-20.04	5m 14s
Test with Python 3.8 on ubuntu-20.04	5m 43s
Test with Python 3.9 on ubuntu-20.04	5m 53s
Test with Python 3.10 on ubuntu-20.04	5m 41s
Test with Python 3.11 on ubuntu-20.04	5m 37s
Test with Python 3.12 on ubuntu-20.04	6m 1s
Test with Python 3.12 on windows-latest	9m 51s
Upload wheels to PyPI	0s
	2h 44m 12s

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