+* Implement moving of domains.
+
+* The AgenDAV "user exists" test is wonky, because there's no real
+ users in AgenDAV. Right now we check the "username" column in the
+ "prefs" table, but all of the shares (and principals?) have URLs
+ instead of usernames. We don't parse the URLs, and instead rely
+ on doing find/replace of substrings in e.g. AgendavMv.
+
+ In particular, this means that AgenDAV pruning does not work! If
+ a user with default preferences is deleted, we don't notice.