222 gridlines on selected sheets #188

Job	Run time
test-with-cov (3.11)	26s
Tests on Linux (3.7)	25s
Build and deploy docs to Pages	27s
Tests on Windows (3.6)	1m 45s
Tests on Linux (3.8)	23s
Tests on Windows (3.7)	1m 7s
Tests on Linux (3.9)	28s
Tests on Windows (3.8)	1m 20s
Tests on Linux (3.10)	21s
Tests on Windows (3.9)	1m 10s
Tests on Linux (3.11)	23s
Tests on Windows (3.10)	1m 27s
Tests on Windows (3.11)	1m 23s
Publish to PyPi	0s
	11m 5s

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