Change build matrix to test django 1.5 and 1.6

.travis.yml

@@ -8,7 +8,6 @@ python:
 
 env:
   matrix:
-  - DJANGO='django>=1.4,<1.5'
   - DJANGO='django>=1.5,<1.6'
   - DJANGO='django>=1.6,<1.7'
 
@@ -23,9 +22,6 @@ script: coverage run runtests.py
 after_success: coveralls
 
 matrix:
-  exclude:
-  - python: 3.3
-    env: DJANGO='django>=1.4,<1.5'
 
   allow_failures:
     - python: 3.3

tox.ini

@@ -1,7 +1,28 @@
 [tox]
-envlist = py26, py27
+envlist = py26dj15, py26dj16, py27dj15, py27dj16
 
 [testenv]
 commands = python runtests.py
 deps =
     -r{toxinidir}/requirements-test.txt
+
+[testenv:py26dj15]
+deps =
+    django<1.6
+    {[testenv]deps}
+
+[testenv:py26dj16]
+deps =
+    django<1.7
+    {[testenv]deps}
+
+[testenv:py27dj15]
+deps =
+    django<1.6
+    {[testenv]deps}
+
+[testenv:py27dj16]
+deps =
+    django<1.7
+    {[testenv]deps}
+