Darren Maczka 44248cd04e Fix/sheets xlsx chart (#1761) ...

* Add support for Google Sheets Exported XLSX Charts

Google Sheets XLSX charts use oneCellAnchor positioning and the data series
do not have the *Cache elements with cached values.

* update CHANGELOG

* Add support for Google Sheets Exported XLSX Charts

Google Sheets XLSX charts use oneCellAnchor positioning and the data series
do not have the *Cache elements with cached values. Because the reader had been
assuming *Cache elements existed as children of strRef and numRef, errors about
the node being deleted were thrown when reading Xlsx exported from Google Sheets.

Co-authored-by: Darren Maczka <dkm@utk.edu>

2021-01-31 18:53:54 +01:00

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