mergeduplicates keyword to handle makeunique=false#3366

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leei wants to merge 2 commits intoJuliaData:mainfrom

Commits on Aug 24, 2023

Implement new dupcol keyword that indicates what to do with duplicate columns in joins and DataFrame constructors
leei
committed

Commits on Sep 19, 2023

Change dupcol keyword to mergeduplicates and adapt
leei
committed