Support for newer python versions

[zacharymostowsky]

Had to change setup.py to below to get to build with python 3.8. Thanks for the repo, dude!

# requirements = [str(ir.req) for ir in install_requirements]
install_requirements = list(install_requirements) 
try:
    requirements = [str(ir.req) for ir in install_requirements]
except:
    requirements = [str(ir.requirement) for ir in install_requirements]

[kylecordes]

Would be nice to know what version of Python this code works with as it stands now.