diff --git a/.travis.yml b/.travis.yml
index 38db60f..acd5288 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,165 +11,306 @@ cache: pip
 
 matrix:
   include:
-    - python: 2.7
-      env:
-        - TOXENV=py2.7-django1.8-sqlite3-redis
-        - TOXENV=py2.7-django1.8-sqlite3-memcached
-        - TOXENV=py2.7-django1.8-sqlite3-pylibmc
-        - TOXENV=py2.7-django1.8-sqlite3-locmem
-        - TOXENV=py2.7-django1.8-sqlite3-filebased
-        - TOXENV=py2.7-django1.8-postgresql-redis
-        - TOXENV=py2.7-django1.8-postgresql-memcached
-        - TOXENV=py2.7-django1.8-postgresql-pylibmc
-        - TOXENV=py2.7-django1.8-postgresql-locmem
-        - TOXENV=py2.7-django1.8-postgresql-filebased
-        - TOXENV=py2.7-django1.8-mysql-redis
-        - TOXENV=py2.7-django1.8-mysql-memcached
-        - TOXENV=py2.7-django1.8-mysql-pylibmc
-        - TOXENV=py2.7-django1.8-mysql-locmem
-        - TOXENV=py2.7-django1.8-mysql-filebased
-        - TOXENV=py2.7-django1.10-sqlite3-redis
-        - TOXENV=py2.7-django1.10-sqlite3-memcached
-        - TOXENV=py2.7-django1.10-sqlite3-pylibmc
-        - TOXENV=py2.7-django1.10-sqlite3-locmem
-        - TOXENV=py2.7-django1.10-sqlite3-filebased
-        - TOXENV=py2.7-django1.10-postgresql-redis
-        - TOXENV=py2.7-django1.10-postgresql-memcached
-        - TOXENV=py2.7-django1.10-postgresql-pylibmc
-        - TOXENV=py2.7-django1.10-postgresql-locmem
-        - TOXENV=py2.7-django1.10-postgresql-filebased
-        - TOXENV=py2.7-django1.10-mysql-redis
-        - TOXENV=py2.7-django1.10-mysql-memcached
-        - TOXENV=py2.7-django1.10-mysql-pylibmc
-        - TOXENV=py2.7-django1.10-mysql-locmem
-        - TOXENV=py2.7-django1.10-mysql-filebased
-        - TOXENV=py2.7-django1.11-sqlite3-redis
-        - TOXENV=py2.7-django1.11-sqlite3-memcached
-        - TOXENV=py2.7-django1.11-sqlite3-pylibmc
-        - TOXENV=py2.7-django1.11-sqlite3-locmem
-        - TOXENV=py2.7-django1.11-sqlite3-filebased
-        - TOXENV=py2.7-django1.11-postgresql-redis
-        - TOXENV=py2.7-django1.11-postgresql-memcached
-        - TOXENV=py2.7-django1.11-postgresql-pylibmc
-        - TOXENV=py2.7-django1.11-postgresql-locmem
-        - TOXENV=py2.7-django1.11-postgresql-filebased
-        - TOXENV=py2.7-django1.11-mysql-redis
-        - TOXENV=py2.7-django1.11-mysql-memcached
-        - TOXENV=py2.7-django1.11-mysql-pylibmc
-        - TOXENV=py2.7-django1.11-mysql-locmem
-        - TOXENV=py2.7-django1.11-mysql-filebased
-    - python: 3.4
-      env:
-        - TOXENV=py3.4-django1.8-sqlite3-redis
-        - TOXENV=py3.4-django1.8-sqlite3-memcached
-        - TOXENV=py3.4-django1.8-sqlite3-pylibmc
-        - TOXENV=py3.4-django1.8-sqlite3-locmem
-        - TOXENV=py3.4-django1.8-sqlite3-filebased
-        - TOXENV=py3.4-django1.8-postgresql-redis
-        - TOXENV=py3.4-django1.8-postgresql-memcached
-        - TOXENV=py3.4-django1.8-postgresql-pylibmc
-        - TOXENV=py3.4-django1.8-postgresql-locmem
-        - TOXENV=py3.4-django1.8-postgresql-filebased
-        - TOXENV=py3.4-django1.8-mysql-redis
-        - TOXENV=py3.4-django1.8-mysql-memcached
-        - TOXENV=py3.4-django1.8-mysql-pylibmc
-        - TOXENV=py3.4-django1.8-mysql-locmem
-        - TOXENV=py3.4-django1.8-mysql-filebased
-        - TOXENV=py3.4-django1.10-sqlite3-redis
-        - TOXENV=py3.4-django1.10-sqlite3-memcached
-        - TOXENV=py3.4-django1.10-sqlite3-pylibmc
-        - TOXENV=py3.4-django1.10-sqlite3-locmem
-        - TOXENV=py3.4-django1.10-sqlite3-filebased
-        - TOXENV=py3.4-django1.10-postgresql-redis
-        - TOXENV=py3.4-django1.10-postgresql-memcached
-        - TOXENV=py3.4-django1.10-postgresql-pylibmc
-        - TOXENV=py3.4-django1.10-postgresql-locmem
-        - TOXENV=py3.4-django1.10-postgresql-filebased
-        - TOXENV=py3.4-django1.10-mysql-redis
-        - TOXENV=py3.4-django1.10-mysql-memcached
-        - TOXENV=py3.4-django1.10-mysql-pylibmc
-        - TOXENV=py3.4-django1.10-mysql-locmem
-        - TOXENV=py3.4-django1.10-mysql-filebased
-        - TOXENV=py3.4-django1.11-sqlite3-redis
-        - TOXENV=py3.4-django1.11-sqlite3-memcached
-        - TOXENV=py3.4-django1.11-sqlite3-pylibmc
-        - TOXENV=py3.4-django1.11-sqlite3-locmem
-        - TOXENV=py3.4-django1.11-sqlite3-filebased
-        - TOXENV=py3.4-django1.11-postgresql-redis
-        - TOXENV=py3.4-django1.11-postgresql-memcached
-        - TOXENV=py3.4-django1.11-postgresql-pylibmc
-        - TOXENV=py3.4-django1.11-postgresql-locmem
-        - TOXENV=py3.4-django1.11-postgresql-filebased
-        - TOXENV=py3.4-django1.11-mysql-redis
-        - TOXENV=py3.4-django1.11-mysql-memcached
-        - TOXENV=py3.4-django1.11-mysql-pylibmc
-        - TOXENV=py3.4-django1.11-mysql-locmem
-        - TOXENV=py3.4-django1.11-mysql-filebased
-    - python: 3.5
-      env:
-        - TOXENV=py3.5-django1.8-sqlite3-redis
-        - TOXENV=py3.5-django1.8-sqlite3-memcached
-        - TOXENV=py3.5-django1.8-sqlite3-pylibmc
-        - TOXENV=py3.5-django1.8-sqlite3-locmem
-        - TOXENV=py3.5-django1.8-sqlite3-filebased
-        - TOXENV=py3.5-django1.8-postgresql-redis
-        - TOXENV=py3.5-django1.8-postgresql-memcached
-        - TOXENV=py3.5-django1.8-postgresql-pylibmc
-        - TOXENV=py3.5-django1.8-postgresql-locmem
-        - TOXENV=py3.5-django1.8-postgresql-filebased
-        - TOXENV=py3.5-django1.8-mysql-redis
-        - TOXENV=py3.5-django1.8-mysql-memcached
-        - TOXENV=py3.5-django1.8-mysql-pylibmc
-        - TOXENV=py3.5-django1.8-mysql-locmem
-        - TOXENV=py3.5-django1.8-mysql-filebased
-        - TOXENV=py3.5-django1.10-sqlite3-redis
-        - TOXENV=py3.5-django1.10-sqlite3-memcached
-        - TOXENV=py3.5-django1.10-sqlite3-pylibmc
-        - TOXENV=py3.5-django1.10-sqlite3-locmem
-        - TOXENV=py3.5-django1.10-sqlite3-filebased
-        - TOXENV=py3.5-django1.10-postgresql-redis
-        - TOXENV=py3.5-django1.10-postgresql-memcached
-        - TOXENV=py3.5-django1.10-postgresql-pylibmc
-        - TOXENV=py3.5-django1.10-postgresql-locmem
-        - TOXENV=py3.5-django1.10-postgresql-filebased
-        - TOXENV=py3.5-django1.10-mysql-redis
-        - TOXENV=py3.5-django1.10-mysql-memcached
-        - TOXENV=py3.5-django1.10-mysql-pylibmc
-        - TOXENV=py3.5-django1.10-mysql-locmem
-        - TOXENV=py3.5-django1.10-mysql-filebased
-        - TOXENV=py3.5-django1.11-sqlite3-redis
-        - TOXENV=py3.5-django1.11-sqlite3-memcached
-        - TOXENV=py3.5-django1.11-sqlite3-pylibmc
-        - TOXENV=py3.5-django1.11-sqlite3-locmem
-        - TOXENV=py3.5-django1.11-sqlite3-filebased
-        - TOXENV=py3.5-django1.11-postgresql-redis
-        - TOXENV=py3.5-django1.11-postgresql-memcached
-        - TOXENV=py3.5-django1.11-postgresql-pylibmc
-        - TOXENV=py3.5-django1.11-postgresql-locmem
-        - TOXENV=py3.5-django1.11-postgresql-filebased
-        - TOXENV=py3.5-django1.11-mysql-redis
-        - TOXENV=py3.5-django1.11-mysql-memcached
-        - TOXENV=py3.5-django1.11-mysql-pylibmc
-        - TOXENV=py3.5-django1.11-mysql-locmem
-        - TOXENV=py3.5-django1.11-mysql-filebased
-    - python: 3.6
-      env:
-        - TOXENV=py3.6-django1.11-sqlite3-redis
-        - TOXENV=py3.6-django1.11-sqlite3-memcached
-        - TOXENV=py3.6-django1.11-sqlite3-pylibmc
-        - TOXENV=py3.6-django1.11-sqlite3-locmem
-        - TOXENV=py3.6-django1.11-sqlite3-filebased
-        - TOXENV=py3.6-django1.11-postgresql-redis
-        - TOXENV=py3.6-django1.11-postgresql-memcached
-        - TOXENV=py3.6-django1.11-postgresql-pylibmc
-        - TOXENV=py3.6-django1.11-postgresql-locmem
-        - TOXENV=py3.6-django1.11-postgresql-filebased
-        - TOXENV=py3.6-django1.11-mysql-redis
-        - TOXENV=py3.6-django1.11-mysql-memcached
-        - TOXENV=py3.6-django1.11-mysql-pylibmc
-        - TOXENV=py3.6-django1.11-mysql-locmem
-        - TOXENV=py3.6-django1.11-mysql-filebased
-
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-sqlite3-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-sqlite3-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-sqlite3-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-sqlite3-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-sqlite3-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-postgresql-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-postgresql-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-postgresql-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-postgresql-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-postgresql-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-mysql-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-mysql-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-mysql-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-mysql-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.8-mysql-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-sqlite3-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-sqlite3-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-sqlite3-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-sqlite3-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-sqlite3-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-postgresql-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-postgresql-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-postgresql-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-postgresql-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-postgresql-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-mysql-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-mysql-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-mysql-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-mysql-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.10-mysql-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-sqlite3-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-sqlite3-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-sqlite3-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-sqlite3-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-sqlite3-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-postgresql-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-postgresql-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-postgresql-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-postgresql-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-postgresql-filebased
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-mysql-redis
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-mysql-memcached
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-mysql-pylibmc
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-mysql-locmem
+  - python: 2.7
+    env: TOXENV=py2.7-django1.11-mysql-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-sqlite3-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-sqlite3-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-sqlite3-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-sqlite3-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-sqlite3-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-postgresql-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-postgresql-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-postgresql-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-postgresql-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-postgresql-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-mysql-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-mysql-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-mysql-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-mysql-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.8-mysql-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-sqlite3-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-sqlite3-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-sqlite3-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-sqlite3-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-sqlite3-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-postgresql-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-postgresql-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-postgresql-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-postgresql-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-postgresql-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-mysql-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-mysql-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-mysql-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-mysql-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.10-mysql-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-sqlite3-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-sqlite3-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-sqlite3-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-sqlite3-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-sqlite3-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-postgresql-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-postgresql-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-postgresql-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-postgresql-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-postgresql-filebased
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-mysql-redis
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-mysql-memcached
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-mysql-pylibmc
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-mysql-locmem
+  - python: 3.4
+    env: TOXENV=py3.4-django1.11-mysql-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-sqlite3-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-sqlite3-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-sqlite3-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-sqlite3-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-sqlite3-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-postgresql-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-postgresql-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-postgresql-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-postgresql-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-postgresql-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-mysql-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-mysql-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-mysql-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-mysql-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.8-mysql-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-sqlite3-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-sqlite3-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-sqlite3-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-sqlite3-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-sqlite3-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-postgresql-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-postgresql-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-postgresql-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-postgresql-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-postgresql-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-mysql-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-mysql-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-mysql-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-mysql-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.10-mysql-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-sqlite3-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-sqlite3-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-sqlite3-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-sqlite3-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-sqlite3-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-postgresql-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-postgresql-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-postgresql-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-postgresql-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-postgresql-filebased
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-mysql-redis
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-mysql-memcached
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-mysql-pylibmc
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-mysql-locmem
+  - python: 3.5
+    env: TOXENV=py3.5-django1.11-mysql-filebased
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-sqlite3-redis
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-sqlite3-memcached
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-sqlite3-pylibmc
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-sqlite3-locmem
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-sqlite3-filebased
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-postgresql-redis
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-postgresql-memcached
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-postgresql-pylibmc
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-postgresql-locmem
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-postgresql-filebased
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-mysql-redis
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-mysql-memcached
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-mysql-pylibmc
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-mysql-locmem
+  - python: 3.6
+    env: TOXENV=py3.6-django1.11-mysql-filebased
 
 sudo: false
 
diff --git a/travis-matrix.py b/travis-matrix.py
new file mode 100755
index 0000000..54e2687
--- /dev/null
+++ b/travis-matrix.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python
+
+from subprocess import check_output
+
+
+envs = check_output(['tox', '-l'])
+
+print('matrix:')
+print('  include:')
+for env in filter(bool, envs.decode().split('\n')):
+    print('  - python: %s' % env[2:5])
+    print('    env: TOXENV=' + env)