Missing comma in `install_requires` in setup.py

[connesy]

The list of install_requires in setup.py is missing a comma between 'scipy>=1.0' and matplotlib>=3.1. This makes conda env export fail with

InvalidVersionSpec: Invalid version '1.0matplotlib>=3.1': invalid character(s)

Section in question:

install_requires=['numpy>=1.15',
                  'scipy>=1.0'
                  'matplotlib>=3.1', 
                  'pandas>=0.24'],