Add whether pubkey recovered from sig is compressed. close #61

src/message.js

@@ -59,6 +59,7 @@ Message.verifyMessage = function (address, sig, message) {
 
   var isCompressed = !!(sig.i & 4);
   var pubKey = ecdsa.recoverPubKey(sig.r, sig.s, hash, sig.i);
+  pubKey.compressed = isCompressed;
 
   var expectedAddress = pubKey.getBitcoinAddress().toString();