To-do

Validation/error handling on CLI arguments - required options like csv, date, period
Potentially move employee-name->entity-tag into config
Potentially move cat->payroll-type into config
Confirm it's "Withholding" in individual taxes and "Liability" in employer taxes
Confirm extra NY-only insurance/asset postings in individual taxes
Confirm lack of :Tax: in employer taxes eg. "US:Medicare", not "US:Tax:Medicare" as in individual taxes
Confirm lack of :memo for Karen