bump pandas dep to take advantage of wheel

 * Bonus: we don't need to pre-install Cython before installing
   pandas.  pandas 0.17.1 was installing numpy, which would error
   unless Cython was installed.

Author: felliott

requirements.txt

@@ -45,7 +45,7 @@ reportlab==3.4.0
 docutils==0.12
 
 # Tabular
-pandas==0.17.1
+pandas==0.25.1
 xlrd==1.0.0
 h5py==2.7.0
 scipy==0.19.1