Drop support for python 3.4

Author: ej2

.travis.yml

@@ -1,6 +1,5 @@
 language: python
 python:
- - 3.4
  - 3.5
  - 3.6
  - 3.7

setup.py

@@ -47,7 +47,6 @@ def read(*parts):
  'License :: OSI Approved :: MIT License',
  'Operating System :: OS Independent',
  'Programming Language :: Python',
- 'Programming Language :: Python :: 3.4',
  'Programming Language :: Python :: 3.5',
  'Programming Language :: Python :: 3.6',
  'Programming Language :: Python :: 3.7',