Remove python 3.4 support

Author: jkho

setup.py

@@ -50,7 +50,6 @@ def read(*filenames, **kwargs):
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',