The standard library module 'datetime' has been moved to 'time::date',
and the 'datetime::datetime' type has been moved to 'time::date::date'.
Some internals to [[time::chrono::moment]] have changed. The following
exports have changed:

* [[datetime]] ................ see [[time::date]]
* [[datetime::datetime]] ...... see [[time::date::date]]
* [[time::chrono::date]] ...... see [[time::chrono::daydate]]
* [[time::chrono::time]] ...... see [[time::chrono::daytime]]

See rationale here: https://lists.sr.ht/~sircmpwn/hare-dev/%3CCSKHP9PFQY8E.1WXPVP2NU4F1%40nova%3E