update .travis.yml to test scipy/numpy

.travis.yml

@@ -1,6 +1,6 @@
 # make it explicit that we favor the new container-based travis workers
 sudo: false
-
+dist: trusty
 language: python
 
 # Pre-install packages for the ubuntu distribution
@@ -24,26 +24,26 @@ env:
   matrix:
     # This environment tests that scikit-learn can be built against
     # versions of numpy, scipy with ATLAS that comes with Ubuntu Precise 12.04
-    - DISTRIB="ubuntu" PYTHON_VERSION="2.7" CYTHON_VERSION="0.23.4"
+    - DISTRIB="ubuntu" PYTHON_VERSION="2.7" CYTHON_VERSION="0.23.5"
       COVERAGE=true
     # This environment tests the oldest supported anaconda env
     - DISTRIB="conda" PYTHON_VERSION="2.7" INSTALL_MKL="false"
-      NUMPY_VERSION="1.6.2" SCIPY_VERSION="0.11.0" CYTHON_VERSION="0.23"
+      NUMPY_VERSION="1.8.2" SCIPY_VERSION="0.13.3" CYTHON_VERSION="0.23.5"
       COVERAGE=true
     # This environment tests the newest supported anaconda env
     # It also runs tests requiring Pandas.
     - DISTRIB="conda" PYTHON_VERSION="3.6" INSTALL_MKL="true"
-      NUMPY_VERSION="1.11.2" SCIPY_VERSION="0.18.1" PANDAS_VERSION="0.19.1"
+      NUMPY_VERSION="1.11.3" SCIPY_VERSION="0.18.1" PANDAS_VERSION="0.19.2"
       CYTHON_VERSION="0.25.2" COVERAGE=true
     # This environment use pytest to run the tests. It uses the newest
     # supported anaconda env. It also runs tests requiring Pandas.
     - USE_PYTEST="true" DISTRIB="conda" PYTHON_VERSION="3.6" INSTALL_MKL="true"
-      NUMPY_VERSION="1.11.2" SCIPY_VERSION="0.18.1" PANDAS_VERSION="0.19.1"
+      NUMPY_VERSION="1.12.1" SCIPY_VERSION="0.19.0" PANDAS_VERSION="0.20.1"
       CYTHON_VERSION="0.25.2"
     # flake8 linting on diff wrt common ancestor with upstream/master
     - RUN_FLAKE8="true" SKIP_TESTS="true"
       DISTRIB="conda" PYTHON_VERSION="3.5" INSTALL_MKL="true"
-      NUMPY_VERSION="1.10.4" SCIPY_VERSION="0.17.0" CYTHON_VERSION="0.23.4"
+      NUMPY_VERSION="1.10.4" SCIPY_VERSION="0.17.0" CYTHON_VERSION="0.23.5"
 
 
 matrix: