type Config struct {
	In         io.ReadCloser // Stream to read from
	Out        io.Writer     // Where to send progress bar to
	Formatter  StreamFormatter
	Size       int
	Current    int
	LastUpdate int
	NewLines   bool
	ID         string
	Action     string
}

type JSONProg struct {
	Current int
	Total   int
}

type PR_JSONProgress interface {
	GetCurrent() int
	GetTotal() int
}

type StreamFormatter interface {
	FormatProg(string, string, interface{}) []byte
	FormatStatus(string, string, ...interface{}) []byte
	FormatError(error) []byte
}