move to version 2 to avoid utp clashes fully (utp uses 1)

index.js

@@ -140,7 +140,7 @@ class DHT extends EventEmitter {
     const token = to.token || (opts && opts.token) || null
 
     return this.rpc.request({
-      version: 1,
+      version: 2,
       tid: 0,
       from: null,
       to,
@@ -608,7 +608,7 @@ class DHT extends EventEmitter {
     const closerNodes = target ? this.table.closest(target) : null
     const ephemeral = socket !== this.rpc.socket || this.ephemeral
     const reply = {
-      version: 1,
+      version: 2,
       tid,
       from: null,
       to,

lib/messages.js

@@ -66,7 +66,7 @@ exports.message = {
       (m.target ? HAS_TARGET : 0) |
       (m.command ? IS_REQUEST : 0)
 
-    state.buffer[state.start++] = 1
+    state.buffer[state.start++] = 2
     state.buffer[state.start++] = flags
 
     cenc.uint16.encode(state, m.tid)
@@ -84,14 +84,14 @@ exports.message = {
   decode (state) {
     const version = state.buffer[state.start++]
 
-    if (version !== 1) {
+    if (version !== 2) {
       throw new Error('Incompatible version')
     }
 
     const flags = cenc.uint.decode(state)
 
     return {
-      version: 1,
+      version: 2,
       tid: cenc.uint16.decode(state),
       from: null, // populated in caller
       to: peerIPv4.decode(state),