0.2.1 release preparation #209

Job	Run time
Clippy nightly (optional)	43s
Clippy	26s
Clang Tidy	11s
Build+test (stable, ubuntu-24.04)	2m 19s
Check for documentation errors	40s
Build+test (stable, ubuntu-22.04)	1m 36s
Format	9s
Miri	1m 12s
Build+test (beta, ubuntu-24.04)	1m 56s
Build+test (beta, ubuntu-22.04)	1m 45s
Packaging	2m 28s
Valgrind	2m 8s
Build+test (nightly, ubuntu-24.04)	1m 43s
Build+test (nightly, ubuntu-22.04)	1m 42s
	18m 58s

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