I am wanting to experiment with some 1 minute tick data (M1). To start with I can get SPY for ~$15 of about 20 years in csv format to mess around with. I am curious now the path to get csv to zorro format files. For formatting I am good with c# and the ZHistoryEditor seems to be dotNet, I was thinking of leaning on that to figure out how to parse and output the zorro format. Does anyone know if ZHistoryEditor is open source? Am running the wrong path from a price and/or effort point of view? Is there an easier path? Any suggestions welcomed.

Thanks