Adding release notes and enabling import order check

Enabling Flake8 library import order check,
adding release_notes, enabling stage-test failing by tox results.

Change-Id: I490b4cb3fe5904f54d84f0ce9b41fe91ec8b4f5d
Signed-off-by: aticig <gulsum.atici@canonical.com>
diff --git a/setup.py b/setup.py
index cb19584..390ca7d 100644
--- a/setup.py
+++ b/setup.py
@@ -18,6 +18,7 @@
 
 
 import os
+
 from setuptools import setup
 
 here = os.path.abspath(os.path.dirname(__file__))