alternative stream interfaces

[marcelklehr]

Needed:

1. one library without configuration-dependent client builds
2. support binary streams

   Socket.io

   • satisfies 1
   • Satisfies 2 (?; I only read about binary blobs)
   • Built-in support for namespaces/rooms (not automatically a pro, since hive doesn't broadcast by default, you have to register a channel and manually in.pipe(out))

     Primus

   • doesn't satisfy 1
   • satisfies 2