Column Name modifier (like fieldLabelModifier in Aeson)

[codygman]

I sometimes want to cleanup the field names in my CSV's because they are something annoying like all uppercase. This function would allow doing that. I'm guessing it would fit cleanly into RowGen.

[teto]

similarly, I've got a CSV whose columns are generated by a program and thus I don't control the column names which are really long

[acowley]

I'm also supportive of this feature. It's a matter of getting it done.