1dfd4dbeb9
Date formats used invalid single `y`, instead of double `yy`. That was was implicitly fixed and displayed correctly by Excel. But LibreOffice does not implicitly fix it and instead display the literal `y` instead of th year value. See also: https://support.office.com/en-us/article/Format-numbers-as-dates-or-times-418bd3fe-0577-47c8-8caa-b4d30c528309 Fixes #298 |
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