version bump and changelog update

Author: gabis-precog

CHANGELOG.rst

@@ -1,6 +1,14 @@
 Changelog
 ---------
 
+v0.4.2
+======
+- Command line fixes:
+    - Support passing ssl certificate and http headers when using ws/wss
+    - Support requesting --version without the need to specify URI arguments
+    - Option --interactionModel to specify interaction (eg. request_response, request_stream)
+    - Added Metadata Push support
+
 
 v0.4.1
 ======

setup.py

@@ -5,7 +5,7 @@
 
 setup(
     name='rsocket',
-    version='0.4.1',
+    version='0.4.2',
     description='Python RSocket library',
     long_description=long_description,
     long_description_content_type='text/markdown',