schema

type Col struct {
	Name        string
	Rule        string
	Description string
}

type SchemaRules struct {
	// Directives
	Separater    rune
	ExactColumns int
	// Checks
	CheckOrdered bool
	Ordered      bool
	CheckFixed   bool
	Fixed        bool
	// Other
	Comment  rune
	Errors   int      // count of schema-specific errors
	NA       []string // NA values
	EMPTY    []string // empty values
	YAMLData map[string]interface{}

	// Columns
	Columns []Col
}