invoke custom function on row

[dave_brann]

Please add support for applying Invoke Custom Function to an entire row. Currently the UI shows the filter source as Any or Individual column. Please add Row as an additional filter source option. The resulting M lang would be = Table.AddColumn(someTable, "new col", each someFunction(_)), where someFunction needs the entire row as input. Without this capability, a user must use Advanced Editor to provide the row as input to my function.