Technical description
=====================

This patch series adds a new refs backend, stacking on top of the files backend,
based on whether `core.namespace` is set in git config.

Currently there is another Big Thing getting started in in the refs backend.
https://public-inbox.org/git/CAJo=hJtg0PAVHT1phbArdra8+4LfnEEuaj3fBid==BXkZghi8g@mail.gmail.com/
Maybe it is worth looking into that as well? Reftables solve
the problem of scaling (i.e. a repo containing a million refs works
just fine, and fast(!) for reading/writing refs, which is not the case
for packed refs)