up version to 0.1.13

New things:
* Statistical tests for RNG
* New SecureRandom class that does the right thing on all platforms
* Peer discovery
* Signature sorting in TransactionBuilder
* BIP32 speed improvements
* Electrum-style public key derivation
* Refactor node/browser code
* Message signing/verification the bitcoin way
* Address.fromScriptPubKey

package.json

@@ -1,7 +1,7 @@
 {
   "name": "bitcore",
   "description": "Bitcoin Library",
-  "version": "0.1.12",
+  "version": "0.1.13",
   "author": {
     "name": "Stephen Pair",
     "email": "stephen@bitpay.com"