increasing python version from 3.3 to 3.4 for numpy 1.12 compatability

.travis.yml

@@ -54,11 +54,11 @@ env:
 matrix:
   fast_finish: true
   include:
-    - python: "3.3"
+    - python: "3.4"
       env: PART="--exclude-dir=theano/tensor -e test_flake8.py ." THEANO_FLAGS="mode=FAST_COMPILE"
-    - python: "3.3"
+    - python: "3.4"
       env: PART="theano/tensor --exclude-dir=theano/tensor/nnet" THEANO_FLAGS="mode=FAST_COMPILE"
-    - python: "3.3"
+    - python: "3.4"
       env: PART="theano/tensor/nnet" THEANO_FLAGS="mode=FAST_COMPILE"
     - python: "2.7"
       env: PART="--exclude-dir=theano/tensor -e test_flake8.py ." THEANO_FLAGS="mode=FAST_COMPILE,floatX=float32"