internal/coding/base64.go
func NewBase64Cleaner(r io.Reader) *Base64Cleaner {
	return &Base64Cleaner{
		Errors: make([]error, 0),
		r:      r,
	}
}
func NewBase64Cleaner(r io.Reader) *Base64Cleaner {
	return &Base64Cleaner{
		Errors: make([]error, 0),
		r:      r,
	}
}
// NewBase64Cleaner returns a Base64Cleaner object for the specified reader.  Base64Cleaner
// implements the io.Reader interface.