Anyone interested in "package versioning"?

[Anton Vodonosov]

22.05.2016, 17:18, "Stelian Ionescu" <sionescu at cddr.org>:

> It's easy to come up with such a case, where a library:
> *) switches from CL epoch timestamps(1900-based) to Unix epoch(1970)
> *) switches from Unix namestrings to URIs
> *) switches from relative CL pathnames with implicit base to absolute
> pathnames

Please clarify, switches how? Where?