text: Title: More bitstamp l2 data?
  Body: It looks like a different websocket address has more L2 book data than the one currently in the code.  At `diff_order_book_v2.html`.  It's the 'live full order book' instead of just the 'live order book'.  Should we change it or set an option to use the full order book? https://www.bitstamp.net/websocket/v2/