Add merged cells support with simple tests#42

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zackteo wants to merge 8 commits intozero-one-group:developfrom zackteo:merged-cells

+145-26

Commits on Jan 18, 2021

Add merged cells support with simple tests
zackteo
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Commits on Jan 19, 2021

Commits on Jan 23, 2021

Temp implementation of util functions
zackteo
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