* Change FTN packet read() to use async iterator

* createMessageUuidAlternate(): Mmethod for FTN message v5 UUID generation when no MSGID to work with
* parseAbbreviatedNetNodeList() now works properly
* Add core/uuid_util.js for various UUID utilities such as v5 named UUID generation
* Fix message meta load/retrieval
* Add lookup for REPLY kludge -> MSGID -> local reply IDs
* Fix SEEN-BY additions @ export
* Don't override MSGIDs if they already exist
* Store MSGID @ export so it can be inspected later
* Add import functionality (working, but WIP!)
* Clean up bundles and packets after import

core/uuid_util.js

@@ -0,0 +1,41 @@
+/* jslint node: true */
+'use strict';
+
+let uuid		= require('node-uuid');
+let assert      = require('assert');
+let _           = require('lodash');
+let createHash	= require('crypto').createHash;
+
+exports.createNamedUUID	= createNamedUUID;
+
+function createNamedUUID(namespaceUuid, key) {
+	//
+	//	v5 UUID generation code based on the work here:
+	//	https://github.com/download13/uuidv5/blob/master/uuid.js
+	//	
+    if(!Buffer.isBuffer(namespaceUuid)) {
+        namespaceUuid = new Buffer(namespaceUuid);
+    }
+	
+	if(!Buffer.isBuffer(key)) {
+		key = new Buffer(key);
+	}
+    
+	let digest = createHash('sha1').update(
+		Buffer.concat( [ namespaceUuid, key ] )).digest();
+
+	let u = new Buffer(16);
+
+	// bbbb - bb - bb - bb - bbbbbb
+	digest.copy(u, 0, 0, 4);			// time_low
+	digest.copy(u, 4, 4, 6);			// time_mid
+	digest.copy(u, 6, 6, 8);			// time_hi_and_version
+
+	u[6] = (u[6] & 0x0f) | 0x50;		// version, 4 most significant bits are set to version 5 (0101)
+	u[8] = (digest[8] & 0x3f) | 0x80;	// clock_seq_hi_and_reserved, 2msb are set to 10
+	u[9] = digest[9];
+	
+	digest.copy(u, 10, 10, 16);
+	
+	return u;
+}