repo.ancestry should document the order the history in returned in

[ianhi]

i.e.: Is it old to new or new to old.

[ianhi]

Possibly should be configurable which direction it goes?

[mpiannucci]

It's new to old.. tip first

[paraseba]

Possibly should be configurable which direction it goes?

Unfortunately current Icechunk cannot do the opposite order efficiently, so we don't provide an API for it.

[dcherian]

IMO the ordering is fine. A nicer HTML repr would make it a lot better.