Significant tidy-up. Update msg_template and add new ObjectAnimation message. Tidy up imports. Added buffer overrun check to the packet decoders since the message template doesn't seem to always correspond with what we receive (Specifically, MapBlockReply's new Size parameter)

lib/classes/UUID.ts

@@ -1,7 +1,7 @@
 import * as validator from 'validator';
 import * as Long from 'long';
-import {XMLNode} from 'xmlbuilder';
-const uuid = require('uuid');
+import { XMLNode } from 'xmlbuilder';
+import * as uuid from 'uuid';
 
 export class UUID
 {