use protodef:

* move general datatypes to protodef along with their tests
* move states to states.js file
* use one protodef serializer by state and direction instead of one big serializer for everything (same thing for the deserializer)
* define a packet as a protodef type using a switch and a container, and adding each minecraft packet as a type (packet_ + name)
* use mapper type from protodef to convert id to name in packet definition
* use general string type : pstring
* divide by 10 the number of iteration in the benchmark to get back to a reasonable test execution time

examples/server_helloworld/server_helloworld.js

@@ -14,6 +14,10 @@ server.on('login', function(client) {
     console.log('Connection closed', '(' + addr + ')');
   });
 
+  client.on('error', function(error) {
+    console.log('Error:', error);
+  });
+
   // send init data so client will start rendering world
   client.write('login', {
     entityId: client.id,