Minimally migrate to pyproject.toml #491

Job	Run time
Python 3.7 on macos-13	2m 45s
Linux docs	1m 12s
Python 3.12 on macos-13	2m 56s
Python 3.7 on Windows x86	3m 7s
Linux meta	59s
Python 3.12 (minimal build) on macos-13	2m 45s
Python 3.8 on Windows x86	2m 43s
Python 3.12 on macos-latest	1m 32s
Linux mypy	55s
Python 3.9 on Windows x86	2m 40s
Python 3.12 (minimal build) on macos-latest	1m 22s
Linux pypy3	2m 38s
Python 3.10 on Windows x86	2m 57s
Linux pypy3	2m 42s
Python 3.11 on Windows x86	2m 43s
Linux py37	1m 48s
Linux py38	1m 35s
Python 3.12 on Windows x86	2m 58s
Linux py39	1m 36s
Python 3.7 on Windows x64	2m 12s
Linux py310	1m 37s
Python 3.8 on Windows x64	1m 52s
Linux py311	1m 36s
Python 3.9 on Windows x64	2m 20s
Linux py312	1m 37s
Python 3.10 on Windows x64	2m 14s
Linux py312 system	2m 17s
Python 3.11 on Windows x64	1m 53s
Python 3.12 on Windows x64	1m 47s
Linux py312 minimal	1m 35s
	1h 2m 53s

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