-Added the table/save handler. It serializes the current table position as long as only one player is present
-Unified new-public-table and new-private-table. The handler lobby/new-table now takes a passphrase, and starts a private table unless that passphrase is `(string= "")`
- the <-json functions now attempt to initialize the new instance with x y z rot values
- added the table/load handler
- added an ugly but working load button and associated form in the table screen
- :json-file is now handled as a possible incoming type
- changed lobby/new... handlers to match the unified back-end
- added stream handlers for file loading

Next up:
     - Make the load procedure make a bit more sense.
     - Work up a playtest copy of Macs' deck.
     - Playtest the fuck out of it, look for bugs.