Fix ASCWriter millisecond handling #706

Job	Run time
docs	1m 14s
test (ubuntu-latest, false, 3.8)	2m 27s
build	20s
test (ubuntu-latest, false, 3.9)	2m 21s
format	19s
test (ubuntu-latest, false, 3.10)	2m 21s
static-code-analysis	31s
test (ubuntu-latest, false, 3.11)	2m 23s
test (ubuntu-latest, false, 3.12)	2m 23s
test (ubuntu-latest, false, pypy-3.8)	2m 20s
test (ubuntu-latest, false, pypy-3.9)	2m 22s
test (macos-latest, false, 3.8)	1m 54s
test (macos-latest, false, 3.9)	1m 49s
test (macos-latest, false, 3.10)	1m 50s
test (macos-latest, false, 3.11)	1m 51s
test (macos-latest, false, 3.12)	1m 58s
test (macos-latest, false, pypy-3.8)	19s
test (macos-latest, false, pypy-3.9)	21s
test (windows-latest, false, 3.8)	1m 44s
test (windows-latest, false, 3.9)	1m 30s
test (windows-latest, false, 3.10)	1m 53s
test (windows-latest, false, 3.11)	2m 9s
test (windows-latest, false, 3.12)	1m 40s
test (windows-latest, false, pypy-3.8)	1m 0s
test (windows-latest, false, pypy-3.9)	47s
upload_pypi	0s
coveralls	1s
	39m 47s

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