[Feature request] Allow selection and ordering of CSV lines and columns by additional attributes

[pdfkungfoo]

1. Allow selective processing of CSV lines into the generated tables. For example by supporting an additional attribute like csvlines=3,7,33-end,2 (should be obvious what I mean with this). And the lines should appear in the same order as cvslines=... lists them.
2. Allow selective processing of CSV columns into the table. For example by supporting an additional attribute like csvcolumns=6,3,2,13,44-end (similarly, allow re-arranging of order of columns).

Of course, these two features should also be working when combining them.

Hoping to keep you busy for a day or two now :-)

[baig]

Can you open different issues for each of them? It will help in labelling and subsequent tracking.

[pdfkungfoo]

Well, I do not think the first two should be separate...