Merge pull request #630 from letsencrypt/rm-py26

Remove Python 2.6 support.

.travis.yml

@@ -17,10 +17,7 @@ env:
     - GOPATH=/tmp/go
     - PATH=$GOPATH/bin:$PATH
   matrix:
-    - TOXENV=py26 BOULDER_INTEGRATION=1
     - TOXENV=py27 BOULDER_INTEGRATION=1
-    - TOXENV=py33
-    - TOXENV=py34
     - TOXENV=lint
     - TOXENV=cover
 

setup.py

@@ -88,7 +88,6 @@ setup(
         'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Security',

tox.ini

@@ -40,7 +40,6 @@ commands =
     ./tox.cover.sh
 
 [testenv:lint]
-# recent versions of pylint do not support Python 2.6 (#97, #187)
 basepython = python2.7
 # separating into multiple invocations disables cross package
 # duplicate code checking; if one of the commands fails, others will