Numpy version was numpy>=1.15,<1.16 because 1.16 had bugs, but 1.16.2…

… solved them, so dropping the <1.16 part

requirements.txt

@@ -1,7 +1,7 @@
 Cython>=0.25
 h5py>=2.6
 matplotlib>=3.0
-numpy>=1.15,<1.16
+numpy>=1.15
 pandas>=0.19
 scipy>=0.18
 scikit-image==0.14.2