Fix message signature with Python 3

Author: btchip

btchip/btchip.py

@@ -415,7 +415,7 @@ def signMessagePrepareV2(self, path, message):
 			self.resolvePublicKeysInPath(path)				
 		result = {}
 		offset = 0
-		encryptedOutputData = ""
+		encryptedOutputData = b""
 		while (offset < len(message)):
 			params = [];
 			if offset == 0:

setup.py

@@ -7,7 +7,7 @@
 here = dirname(__file__)
 setup(
     name='btchip-python',
-    version='0.1.21',
+    version='0.1.22',
     author='BTChip',
     author_email='[email protected]',
     description='Python library to communicate with Ledger Nano dongle',