Squishing a big bad bug

As I was preparing to push a new version of poppr to CRAN , this tweet (appropriately) came across my feed: Mistakes happen in science. What matters is what you do next. Anyone want to share a story of a mistake & how they handled it? — Adriana Porter Felt (@apf) September 10, 2017 The reason I was updating poppr was to fix a mistake I had made a few years ago.