tests

Add newsfragment #10

Job	Run time
collateral (diffcov)	4m 56s
test (3.9, ubuntu-latest)	3m 26s
test_cygwin (39, windows-latest)	15m 32s
test (3.9, windows-latest)	2m 31s
collateral (docs)	2m 10s
test (3.13, ubuntu-latest)	3m 33s
test (3.13, macos-latest)	2m 53s
test (3.13, windows-latest)	2m 36s
test (3.10, ubuntu-latest)	4m 10s
test (3.11, ubuntu-latest)	3m 56s
test (3.12, ubuntu-latest)	4m 11s
test (3.14, ubuntu-latest)	2m 42s
test (pypy3.10, ubuntu-latest, stdlib)	2m 38s
test (ubuntu-latest, 3.10, stdlib)	2m 37s
integration-test	0s
check	3s
release	0s
	57m 54s

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