Fix for older numpy
Fix for older numpy

anntzer/seaborn,arokem/seaborn,phobson/seaborn,petebachant/seaborn,anntzer/seaborn,arokem/seaborn,lukauskas/seaborn,lukauskas/seaborn,phobson/seaborn,mwaskom/seaborn,mwaskom/seaborn,sauliusl/seaborn