Martin von Zweigbergk d78fd9e979 revsets: add functions and operators for children and descendants
This adds `children(<set>)` and `<set>:` for the children of the given
set, and `descendants(<set>)` and `<set>:*` for the descendants of the
given set. The children and descendants are filtered to be among
ancestors of non-obsolete commits. I haven't added a way of overriding
that yet.
2021-04-21 23:34:20 -07:00
..
2021-04-18 23:04:15 -07:00