Stop running tests on unmaintained versions of Python/Django

.travis.yml

@@ -2,20 +2,12 @@ sudo: false
 language: python
 cache: pip
 python:
-  - "2.6"
   - "2.7"
-  - "3.2"
-  - "3.3"
   - "3.4"
   - "3.5"
   - "3.6"
 env:
-  - TOXENV="django14"
-  - TOXENV="django15"
-  - TOXENV="django16"
-  - TOXENV="django17"
   - TOXENV="django18"
-  - TOXENV="django19"
   - TOXENV="django110"
   - TOXENV="django111"
   - TOXENV="djangodev"
@@ -23,77 +15,19 @@ env:
 matrix:
   fast_finish: true
   exclude:
-    - python: "3.6"
-      env: TOXENV="django14"
-    - python: "3.6"
-      env: TOXENV="django15"
-    - python: "3.6"
-      env: TOXENV="django16"
-    - python: "3.6"
-      env: TOXENV="django17"
     - python: "3.6"
       env: TOXENV="django18"
-    - python: "3.6"
-      env: TOXENV="django19"
     - python: "3.6"
       env: TOXENV="django110"
 
-    - python: "3.5"
-      env: TOXENV="django14"
-    - python: "3.5"
-      env: TOXENV="django15"
-    - python: "3.5"
-      env: TOXENV="django16"
-    - python: "3.5"
-      env: TOXENV="django17"
-
-    - python: "3.4"
-      env: TOXENV="django14"
-    - python: "3.4"
-      env: TOXENV="django19"
     - python: "3.4"
       env: TOXENV="django110"
     - python: "3.4"
       env: TOXENV="django111"
 
-    - python: "3.3"
-      env: TOXENV="django14"
-    - python: "3.3"
-      env: TOXENV="django19"
-    - python: "3.3"
-      env: TOXENV="django110"
-    - python: "3.3"
-      env: TOXENV="django111"
-    - python: "3.3"
-      env: TOXENV="djangodev"
-
-    - python: "3.2"
-      env: TOXENV="django14"
-    - python: "3.2"
-      env: TOXENV="django19"
-    - python: "3.2"
-      env: TOXENV="django110"
-    - python: "3.2"
-      env: TOXENV="django111"
-    - python: "3.2"
-      env: TOXENV="djangodev"
-
     - python: "2.7"
       env: TOXENV="djangodev"
 
-    - python: "2.6"
-      env: TOXENV="django17"
-    - python: "2.6"
-      env: TOXENV="django18"
-    - python: "2.6"
-      env: TOXENV="django19"
-    - python: "2.6"
-      env: TOXENV="django110"
-    - python: "2.6"
-      env: TOXENV="django111"
-    - python: "2.6"
-      env: TOXENV="djangodev"
-
   allow_failures:
     - env: TOXENV="djangodev"
 

tox.ini

@@ -1,30 +1,22 @@
 [tox]
-envlist=
-    py26-django{14,15,16},
-    py27-django{14,15,16,17,18,19,110,111},
-    py32-django{15,16,17,18},
-    py33-django{15,16,17,18},
-    py34-django{15,16,17,18,19,110,111},
-    py35-django{18,19,110,111,dev},
-    py36-django{111,dev},
-    docs,
+envlist =
+    py27-django{18,110,111}
+    py34-django{18,110,111}
+    py35-django{18,110,111,dev}
+    py36-django{111,dev}
+    docs
 
 [testenv]
 deps =
     coverage == 3.6
-    django14: Django >= 1.4, < 1.5
-    django15: Django >= 1.5, < 1.6
-    django16: Django >= 1.6, < 1.7
-    django17: Django >= 1.7, < 1.8
     django18: Django >= 1.8, < 1.9
-    django19: Django >= 1.9, < 1.10
     django110: Django >= 1.10, < 1.11
     django111: Django >= 1.11, < 1.12
     djangodev: https://github.com/django/django/tarball/master
-commands=
+commands =
     coverage run --source polymorphic runtests.py
 
 [testenv:docs]
-deps=Sphinx
+deps = Sphinx
 changedir = docs
 commands = sphinx-build -W -b html -d {envtmpdir}/doctrees . {envtmpdir}/html