lint

type Config struct {
	ProhibitedMatter []Matter `yaml:"prohibited-matter"`
}

type Matter struct {
	Target []string            `yaml:"target"`
	Import []string            `yaml:"import"`
	Ref    map[string][]string `yaml:"ref"`
	Write  []string            `yaml:"write"`
}

type Trifle struct {
	Position token.Position
	Text     string
}