[DOC] Match args w/ docstring.
ENH: Helper for running a single month.
ENH: Pass find_attr a path to dd or the dd itself.
Getting an any/all issue if you just test if fields:
ENH. Helper for checking variables.
EHN/DOC: Accept variable args.

Update docstring for variable inputs.
Added exapmle.
ENH:  Helper for checking if a field used in one year is also in
anohter.

Helps with building settings so you don't have to look up and type
in every year.
more fields