since...

commit 7282014e
Date:   Fri Feb 1 15:15:16 2019 +0100

    tdf#50916 Makes numbers of columns dynamic.

Change-Id: Ib4f39c03aadc41fb2a226f47e452fd66b9b34821
Reviewed-on: https://gerrit.libreoffice.org/70387
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>