Drop columns of a CSV file using the same DSL as "xan select".
Basically a shorthand for the negative selection of "xan select".
Usage:
xan drop [options] [--] <selection> [<input>]
xan drop --help
Common options:
-h, --help Display this message
-o, --output <file> Write output to <file> instead of stdout.
-n, --no-headers When set, the first row will not be interpreted
as headers. (i.e., They are not searched, analyzed,
sliced, etc.)
-d, --delimiter <arg> The field delimiter for reading CSV data.
Must be a single character.