upgrade numpy - previous bug seems fixed:

bug reported in related with hdf5 seems to be fixed now:
pandas-dev/pandas#24839

requires pytables>3.5.1

Author: alpae

requirements.txt

@@ -1,7 +1,7 @@
 future>=0.14.3
-numpy>=1.13,<1.16.0
+numpy>=1.16.0
 numexpr>=2.4
-tables>=3.4
+tables>=3.5.1
 cython
 PySAIS
 biopython