feat: drop Python 2.6/3.3 official support, add 3.5/3.6 testing

Closes #441

Author: bbangert

.travis.yml

@@ -14,18 +14,6 @@ matrix:
   exclude:
   - python: '2.7'
   include:
-  - python: '2.6'
-    env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py26
-  - python: '2.6'
-    env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py26
-  - python: '2.6'
-    env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py26-gevent
-  - python: '2.6'
-    env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py26-gevent
-  - python: '2.6'
-    env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py26-eventlet
-  - python: '2.6'
-    env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py26-eventlet
   - python: '2.7'
     env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py27
   - python: '2.7'
@@ -40,14 +28,18 @@ matrix:
     env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py27-eventlet
   - python: '2.7'
     env: ZOOKEEPER_VERSION=3.5.2-alpha TOX_VENV=py27
-  - python: '3.3'
-    env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py33
-  - python: '3.3'
-    env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py33
   - python: '3.4'
     env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py34
   - python: '3.4'
     env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py34
+  - python: '3.5'
+    env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py35
+  - python: '3.5'
+    env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py35
+  - python: '3.6'
+    env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=py36
+  - python: '3.6'
+    env: ZOOKEEPER_VERSION=3.4.10 TOX_VENV=py36
   - python: pypy
     env: ZOOKEEPER_VERSION=3.3.6 TOX_VENV=pypy
   - python: pypy

setup.py

@@ -52,11 +52,11 @@
         "Operating System :: OS Independent",
         "Programming Language :: Python",
         "Programming Language :: Python :: 2",
-        "Programming Language :: Python :: 2.6",
         "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",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Communications",

tox.ini

@@ -2,14 +2,13 @@
 minversion = 1.6
 skipsdist = True
 envlist = pep8,
-    py26,
-    py26-gevent,
-    py26-eventlet,
     py27,
     py27-gevent,
     py27-eventlet,
     py33,
     py34,
+    py35,
+    py36,
     pypy
 
 [testenv:pep8]
@@ -33,14 +32,6 @@ deps = {[testenv]deps}
 deps = {[testenv]deps}
     -r{toxinidir}/requirements_eventlet.txt
 
-[testenv:py26-gevent]
-deps = {[testenv]deps}
-    -r{toxinidir}/requirements_gevent.txt
-
-[testenv:py26-eventlet]
-deps = {[testenv]deps}
-    -r{toxinidir}/requirements_eventlet.txt
-
 [flake8]
 builtins = _
 exclude = .venv,.tox,dist,doc,*egg,.git,build,tools