Seeking advice about versioning change

Hi all, RStudio has changed the versioning scheme in the last release. The last one (currently packaged in Fedora) was 1.4.1717. The new one is (wait for it...) 2021.09.0+351 (reminds me of [1]). So two obvious questions: 1. The two schemes actually order properly. Should I increment the epoch anyway? 2. What should I do with that +351? Do we have a policy about the "+"? Should we make one? Thanks in advance. [1] https://xkcd.com/927/ -- Iñaki Úcar