Remove py2.6 support

I don't care enough..

.travis.yml

@@ -2,11 +2,6 @@ matrix:
   allow_failures:
     - python: "pypy3"
   include:
-    - os: linux
-      dist: trusty
-      language: python
-      python: "2.6"
-      env: TYPE="linux" PYVER="2.6" PYARGS="-R"
     - os: linux
       dist: trusty
       language: python
@@ -42,11 +37,6 @@ matrix:
       language: python
       python: "pypy3"
       env: TYPE="linux" PYVER="pypy3" PYARGS="-R -bb"
-    - os: linux
-      language: generic
-      sudo: required
-      dist: trusty
-      env: TYPE="windows" PYVER="2.6.6" PYARGS=""
     - os: linux
       language: generic
       sudo: required

docs/index.rst

@@ -27,7 +27,7 @@ an input() function which can read filenames.
 You can think of it as `six <https://pypi.org/project/six/>`__ for filename
 handling.
 
-It supports Python 2.6, 2.7, 3.3+, works with PyPy, works on Linux, Windows,
+It supports Python 2.7, 3.3+, works with PyPy, works on Linux, Windows,
 macOS, is MIT licensed, and only depends on the stdlib.
 
 ::

setup.py

@@ -87,7 +87,6 @@ def run(self):
         classifiers=[
             'Operating System :: OS Independent',
             'Programming Language :: Python :: 2',
-            'Programming Language :: Python :: 2.6',
             'Programming Language :: Python :: 2.7',
             'Programming Language :: Python :: 3',
             'Programming Language :: Python :: 3.3',