implement incremental checking based on built-in sentence navigation #103

Job	Run time
test (ubuntu-latest, 27.1, false)	29s
test (ubuntu-latest, 28.2, false)	27s
test (ubuntu-latest, 29.2, false)	33s
test (macos-latest, 27.1, false)	1m 37s
test (macos-latest, 28.2, false)	1m 41s
test (macos-latest, 29.2, false)	1m 48s
test (windows-latest, 27.1, false)	1m 23s
test (windows-latest, 28.2, false)	45s
test (windows-latest, 29.2, false)	1m 4s
test (ubuntu-latest, snapshot, true)	24s
test (macos-latest, snapshot, true)	1m 36s
test (windows-latest, snapshot, true)	59s
	12m 46s

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