Everybody loves stuff that just work 🤟🏽. But getting there is a long journey! Discussing with some people at the Nextcloud Conference in Berlin last week, a recurrent pain is app compatibility with each new server version. Nextcloud releases new versions every 4 months. Then, each individual app's maintainer needs to test if they work with the new version, fix any possible breakage, and manually self-report as compatible. A common reason for an app to break is that it uses APIs that are not marked as stable. So I tried to help the discussion by bringing some data with the...