fine tune the test targets

Author: chfw

.travis.yml

@@ -3,15 +3,22 @@ language: python
 notifications:
   email: false
 env:
-  - DJANGO_VERSION=1.5.12
-  - DJANGO_VERSION=1.6.11
   - DJANGO_VERSION=1.7.8
   - DJANGO_VERSION=1.8.2
   - DJANGO_VERSION=1.9
 python:
   - 2.7
   - 3.3
   - 3.4
+  - 3.5
+matrix:
+  exclude:
+    - python: 3.3
+	  env: DJANGO_VERSION=1.9
+    - python: 3.5
+	  env: DJANGO_VERSION=1.7.8
+    - python: 3.5
+	  env: DJANGO_VERSION=1.8.2
 install:
   - pip install Django==$DJANGO_VERSION
   - pip install -r requirements.txt