Incremented Python versions in matrix.

Author: cgranade

.travis.yml

@@ -2,9 +2,9 @@ sudo: false
 language: python
 python:
   - "2.7"
-  - "3.3"
   - "3.4"
   - "3.5"
+  - "3.6"
 
 addons:
   apt:

setup.py

@@ -71,8 +71,9 @@ def write_version(filename=VERSION_TARGET):
         'Natural Language :: English',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: Implementation :: CPython',
         'Topic :: Scientific/Engineering :: Physics',
     ],