Moved news item about grouping sets
Moved news item about grouping sets

jangorecki/data.table,vlulla/data.table,Rdatatable/data.table,vlulla/data.table,jangorecki/data.table,Rdatatable/data.table,Rdatatable/data.table,jangorecki/data.table,vlulla/data.table,Rdatatable/data.table,vlulla/data.table,jangorecki/data.table