handle various detach/delete/create/attach events better with respect to XDCs, materializations, and wireguard tunnels.

We are now enforcing the validity of {project,experiment,rlz} names via
the Merge API. Until there's a way to refer to the regexes, we update
the subscription regex key that the `realize` service handles.

* Updates Merge API to v1.1.1

* Adds a log message when creating a realization

Closes #257, #259.

bump reconcile, let you rerun save-containers.yml without destroying everything, ping from xdc works now