fix gh-4860. Bump numpy and scipy min version

.travis.yml

@@ -30,7 +30,7 @@ addons:
    - dvipng
 
 install:
-  - if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then conda create --yes -q -n pyenv mkl python=2.7 numpy=1.7.1 scipy=0.11 nose=1.3.0 pip flake8=2.3 six=1.9.0 pep8=1.6.2 pyflakes=0.8.1 sphinx; fi
+  - if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then conda create --yes -q -n pyenv mkl python=2.7 numpy=1.9.1 scipy=0.14 nose=1.3.0 pip flake8=2.3 six=1.9.0 pep8=1.6.2 pyflakes=0.8.1 sphinx; fi
   - if [[ $TRAVIS_PYTHON_VERSION == '3.3' ]]; then conda create --yes -q -n pyenv mkl python=3.3 numpy=1.9.1 scipy=0.14.0 nose=1.3.4 pip flake8=2.3 six=1.9.0 pep8=1.6.2 pyflakes=0.8.1 sphinx; fi
   - source activate pyenv
   - if [[ $TRAVIS_PYTHON_VERSION == '2.7' ]]; then pip install pydot; else pip install pydot-ng; fi

doc/requirements.txt

@@ -14,10 +14,10 @@ Requirements
         release 0.6. Python 2.6 was supported up to and including the
         release 0.8.2. Python 3 is supported past the 3.3 release.
 
-    `NumPy <http://numpy.scipy.org/>`_ >= 1.7.1 < 1.11.1
+    `NumPy <http://numpy.scipy.org/>`_ >= 1.9.1 < 1.11.1
         Earlier versions could work, but we don’t test it.
 
-    `SciPy <http://scipy.org>`_ >= 0.11 < 0.17.1
+    `SciPy <http://scipy.org>`_ >= 0.14 < 0.17.1
         Only currently required for sparse matrix and special functions support, but highly recommended. SciPy >=0.8 could work, but earlier versions have known bugs with sparse matrices.
 
     `BLAS`_ installation (with Level 3 functionality)

setup.py

@@ -162,7 +162,7 @@ def do_setup():
           platforms=PLATFORMS,
           packages=find_packages(),
           # 1.7.0 give too much warning related to numpy.diagonal.
-          install_requires=['numpy>=1.7.1', 'scipy>=0.11', 'six>=1.9.0'],
+          install_requires=['numpy>=1.9.1', 'scipy>=0.14', 'six>=1.9.0'],
           # pygments is a dependency for Sphinx code highlight
           extras_require={
               'test': ['nose>=1.3.0', 'nose-parameterized>=0.5.0', 'flake8<3'],