Fix

added 1 commit

• 1e5b41d6 - Fixed the issues mentioned by Michael

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added 7 commits

• 1e5b41d6...315719a3 - 6 commits from branch ml:7-accept-none-parameter-for-concatenate
• 9c45b1a9 - Merge remote-tracking branch 'upstream/7-accept-none-parameter-for-concatenate'

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approved this merge request

unmarked as a Work In Progress

enabled an automatic merge when the pipeline for 9c45b1a9 succeeds

merged

mentioned in commit cbdfc153