Merge remote-tracking branch 'upstream/main' #51

Job	Run time
check docs (ubuntu-latest / stable)	56s
check feature flags (ubuntu-latest / stable)	1m 33s
check examples (ubuntu-latest / stable)	1m 12s
check format (ubuntu-latest / nightly)	12s
check licenses (ubuntu-latest / stable)	23s
check minimal versions of transitive dependencies (ubuntu-latest / stable)	1m 12s
check linter (ubuntu-latest / stable)	1m 15s
check minimal supported rust version (ubuntu-latest / msrv)	1m 58s
check spelling (ubuntu-latest / nightly)	4m 7s
test (ubuntu-latest / stable)	2m 32s
test (macos-latest / stable)	2m 29s
test (windows-latest / stable)	7m 34s
	25m 23s

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