Field Comparison Validators
New validators compare against other record fields:
- eq_field, Equal to field
- gt_field, Greater Than field
- gte_field, Greater Than or Equal to field
- lt_field, Less Than field
- lte_field, Less Than or Equal to field
- neq_field, Not Equal to field
These validators compare against values:
- equal, Value must be equal
- not_equal, Value must not be equal