DTD2230 Change Return Simulator and The Last Coin (revisited)

<p>Two dough-related demos today. The latter was last looked at over *1600* episodes ago plus change 🪙🪙 --- Feedback, comments, demos pleas to ✉️ <a href='mailto:thedottodotpodcast@gmail.com'>thedottodotpodcast@gmail.com</a> 👍 Do tell your friends, leave us a review on iTunes (ok, 🍏 Podcasts) or follow us on Twitter with #DTDPod You can also support the show with a tap at <a href='https://glow.fm/dottodot'>https://glow.fm/dottodot</a> - please consider doing so and become an official Dot to Dot 🌟 ----  Why not check out our sister show where @TheBlurredNerd and I (@USA2DAY) talk about all things Echo each week? 🤷 That's The Echo Show at <a href='https://theechoshow.pinecast.co'>https://theechoshow.pinecast.co</a> 👍</p>