Final round of cleanup #38

Job	Run time
linux (x86_64)	1m 24s
macos (x86_64)	58s
windows (x64)	2m 28s
linux (x86)	1m 52s
macos (aarch64)	3m 25s
windows (x86)	3m 8s
linux (aarch64)	1m 47s
linux (armv7)	1m 43s
linux (s390x)	1m 31s
linux (ppc64le)	1m 34s
Check clippy for Python bindings	11s
sdist	10s
Release	0s
	20m 11s

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