Prepare 18.1.0 release. #988

Job	Run time
mypy	24s
ruff	8s
sdist	3m 47s
tox (windows-latest)	1m 57s
tox (ubuntu-latest)	1m 45s
parse_sdl (windows-latest, 2.0.16)	48s
parse_sdl (windows-latest, 2.30.0)	45s
parse_sdl (windows-latest, 2.0.14)	53s
parse_sdl (macos-latest, 2.0.14)	24s
parse_sdl (macos-latest, 2.30.0)	19s
build (ubuntu-latest, pypy-3.8, x64)	3m 9s
build (windows-latest, 3.8, x64)	2m 58s
build (ubuntu-latest, 3.8, x64)	3m 4s
parse_sdl (macos-latest, 2.0.16)	25s
build (windows-latest, pypy-3.8, x64)	5m 13s
linux-wheels (x86_64, cp38-manylinux*)	1m 55s
build (windows-latest, pypy-3.8, x86)	5m 12s
test-docs	1m 31s
build (windows-latest, 3.8, x86)	4m 14s
linux-wheels (x86_64, pp38-manylinux*)	2m 16s
linux-wheels (aarch64, pp38-manylinux*)	11m 41s
build-macos (pp38-*)	3m 42s
linux-wheels (aarch64, cp38-manylinux*)	12m 36s
build-macos (cp38-*_universal2)	5m 21s
publish	39s
	1h 15m 6s

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