add py3 only classifier
@@ -21,6 +21,7 @@ setup(name='cantools',
classifiers=[
'License :: OSI Approved :: MIT License',
'Programming Language :: Python :: 3',
+ 'Programming Language :: Python :: 3 :: Only',
'Programming Language :: Python :: 3.6',
'Programming Language :: Python :: 3.7',
'Programming Language :: Python :: 3.8',
