type rsc.io/qr.pngWriter

4 uses

	rsc.io/qr (current package)
		png.go#L23: 	var p pngWriter
		png.go#L27: type pngWriter struct {
		png.go#L37: func (w *pngWriter) encode(c *Code) []byte {
		png.go#L71: func (w *pngWriter) writeChunk(name string, data []byte) {