Test with numpy 1.4.1

.travis.yml

@@ -11,7 +11,7 @@ before_install:
   - sudo apt-get install -qq libatlas3gf-base libatlas-dev
 install:
 #If we don't install numpy before SciPy 0.10.1, the SciPy installations fails.
-  - "pip install -q numpy --use-mirrors"
+  - "pip install -q numpy==1.4.1 --use-mirrors"
 #We can't install SciPy as there is no BLAS installed.
   - "pip install . --no-deps --use-mirrors"
 # command to run tests