Follow-up: support manual py26 testing; dont advertise 3.3 support

setup.py

@@ -1,5 +1,6 @@
-import sys
 import os
+import sys
+
 from setuptools import setup, Command, find_packages
 
 # Pull version from source without importing
@@ -23,6 +24,8 @@ class Tox(Command):
 
 
 test_require = ['tox', 'mock']
+if sys.version_info < (2, 7):
+    test_require.append('unittest2')
 
 here = os.path.abspath(os.path.dirname(__file__))
 
@@ -51,7 +54,6 @@ setup(
         "Programming Language :: Python :: 2",
         "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.3",
         "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{27,34,35,36,py}, docs
+envlist = py{26,27,34,35,36,py}, docs
 
 [pytest]
 testpaths = kafka test
@@ -19,12 +19,17 @@ deps =
     python-snappy
     lz4
     xxhash
+    py26: unittest2
 commands =
     py.test {posargs:--pylint --pylint-rcfile=pylint.rc --pylint-error-types=EF --cov=kafka --cov-config=.covrc}
 setenv =
     PROJECT_ROOT = {toxinidir}
 passenv = KAFKA_VERSION
 
+[testenv:py26]
+# pylint doesn't support python2.6
+commands = py.test {posargs:--cov=kafka --cov-config=.covrc}
+
 [testenv:pypy]
 # pylint is super slow on pypy...
 commands = py.test {posargs:--cov=kafka --cov-config=.covrc}