Update setup.py

setup.py

@@ -12,7 +12,7 @@ setup(
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='0.3.0',
+    version='0.3.1',
 
     description='Deep learning model converter, visualization and editor.',
     long_description=long_description,
@@ -49,7 +49,6 @@ setup(
 
         # Specify the Python versions you support here. In particular, ensure
         # that you indicate whether you support Python 2, Python 3 or both.
-        'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 3'
     ],