Add Python 3.4 to the test matrix

Test with Django 1.9 only and allow failres on it.

This is just to verify how much we miss for Python 3 support.
Signed-off-by: Michal Čihař <michal@cihar.com>

.travis.yml

@@ -8,9 +8,9 @@
 # - Run pylint/pep8 checker
 #
 language: python
-# only python 2.7 is supported
 python:
   - "2.7"
+  - "3.4"
 # build matrix configuration
 env:
   matrix:
@@ -45,3 +45,24 @@ sudo: false
 notifications:
   webhooks:
     - https://buildtimetrend.herokuapp.com/travis
+matrix:
+  exclude:
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.9,<1.10" CI_MODE=lint
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.9,<1.10" CI_MODE=setup
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.9,<1.10" CI_DATABASE=mysql
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.9,<1.10" CI_DATABASE=postgresql
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.7,<1.8"
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.8,<1.9"
+    - python: "3.4"
+      env: CI_PIP_DEPS="--pre django"
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.9,<1.10" CI_DATABASE=postgresql CI_MODE=selenium
+  allow_failures:
+    - python: "3.4"
+      env: CI_PIP_DEPS="Django>=1.9,<1.10"