prepare 0.6.3 release

ChangeLog

-python-nbxmpp 0.6.3 (TBA)
+python-nbxmpp 0.6.3 (26 January 2018)
 
  * Add ALPN and SNI support for when using DirectTLS
  * Bugfixes

nbxmpp/__init__.py

@@ -17,4 +17,4 @@ from .client_nb import NonBlockingClient
 from .plugin import PlugIn
 from .smacks import Smacks
 
-__version__ = "0.6.2"
+__version__ = "0.6.3"

setup.py

@@ -3,7 +3,7 @@
 from distutils.core import setup
 
 setup(name='nbxmpp',
-      version='0.6.2',
+      version='0.6.3',
       description='Non blocking Jabber/XMPP module',
       author='Yann Leboulanger',
       author_email='asterix@lagaule.org',