Half a year after the last update, I’ve uploaded version 5.1 of my Hypatia RPN calculator app for…

Half a year after the last update, I&rsquo;ve uploaded version 5.1 of my Hypatia RPN calculator app for Windows, https://hypatia-rpn.net It brings a minor new feature that may mostly be useful for those who want to create their own 3-argument user-defined operators — not sure how many (if any) will ever need it, but when (usually out of nowhere) an idea for how to improve Hypatia comes to me, I…