Checkpoint addition of long-polling.
Checkpoint client fallback from websockets to long poll.
Break up the client into client+transports to allow user-selected
priority.
Make the connection-chain async completely.
Re-arrange the .js sources.
Add supprot for Flash-based WebSockets.
Adjust some packages around longpoll->http protocols.
Combine the client into a single file.
Allow serving of the client.js through the server.