processor

type Processor interface {
	// called for every cell first in order
	Cell(
		collector validation.Collector,
		col table.ColumnName,
		content string,
	) (
		cleanedContent string, valid bool, err error,
	)
	// called after all cells of all rows were processed
	Row(
		collector validation.Collector,
		row table.Row,
	) (valid bool, err error)
	// called in the very end
	Table(
		collector validation.Collector,
		tableValidation *validation.Table,
		table *table.Table,
	) (valid bool, err error)
}