Fix bugs and differences in namings/types/fields between bfxapi.rest.types, bfxapi.rest.serializers and bfxapi.websocket.types, bfxapi.websocket.serializers.

bfxapi/websocket/handlers.py

@@ -139,7 +139,7 @@ class AuthenticatedChannelsHandler(object):
         ("fcs", "fcn", "fcu", "fcc",): serializers.FundingCredit,
         ("fls", "fln", "flu", "flc",): serializers.FundingLoan,
         ("ws", "wu",): serializers.Wallet,
-        ("bu",): serializers.BalanceInfo
+        ("bu",): serializers.Balance
     }
 
     EVENTS = [