Prepare 0.4.0 release

Author: levlaz

CHANGELOG

@@ -6,7 +6,7 @@ Here you can see the full list of changes between each Nightfall release.
 Version 0.4.0
 -------------
 
-UNRELEASED
+Released on June 20, 2021
 
 - Add debug logs to Nightfall module
 - Change primary class name from ``Api`` to ``Nightfall`` to make things a bit 

setup.py

@@ -16,11 +16,11 @@ def readme():
 
 setup(
     name="nightfall",
-    version="0.3.0",
+    version="0.4.0",
     description="Python SDK for Nightfall",
     long_description=readme(),
     long_description_content_type="text/markdown",
-    url="https://github.com/levlaz/nightfall-python-sdk",
+    url="https://github.com/nightfallai/nightfall-python-sdk",
     author="Nightfall",
     author_email="[email protected]",
     license="MIT",