Add flag to support for CQL#31

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gamorejon wants to merge 4 commits intodmarkham:masterfrom

propertechnologies:master

Commits on Feb 27, 2020

Commits on Mar 3, 2020

need to conform to MarshalCQL interface correctly
gamorejon
committed

Commits on Jun 18, 2020

don't error on null cells
gamorejon
committed