UwUSync Server 0.2.2

The command assistant's records, for UwUSSH 0.3. UwUSSH 0.3 syncs the settings of its command
assistant and its cache of answers as two new kinds of record (assist_config and
assist_cache). The server stores them like any other record. Before, it refused a push that held
a kind it did not know.

• Old clients are not sent them. UwUSSH 0.2 cannot read a page that holds a kind it has never
  heard of, so the assistant's records only go to clients that ask for them (assist=1). The
  others are passed over, and the cursor still moves past them, so an older client keeps syncing
  everything else and never gets stuck in front of them.
• New kinds need no new server. A record's kind is now any short lowercase name, kept as it
  came. Kinds the server does not know yet go to the same clients as the assistant's: those skip a
  kind they cannot read instead of failing the page.
• A conflict hands a record back under its own kind. Before, a kind the server could not name came
  back as a host.