Removed dup "mean.IDate <-" in IDateTime.R,  thanks to Johann Hibschman.
Removed dup "mean.IDate <-" in IDateTime.R,  thanks to Johann Hibschman.

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