old_contents: __copyright__ = "Flensburg University of Applied Sciences, Europa-Universität Flensburg, Centre for Sustainable Energy Systems, DLR-Institute for Networked Energy Systems"
  __license__ = "GNU Affero General Public License Version 3 (AGPL-3.0)"
  __author__ = "mariusves"
  
  
  from setuptools import find_packages, setup
  
  setup(name='eTraGo',
        author='DLR VE, ZNES Flensburg',
        author_email='',
        description='electrical Transmission Grid Optimization of flexibility options for transmission grids based on PyPSA',
        version='0.3',
  	  url='https://github.com/openego/eTraGo',
        license="GNU Affero General Public License Version 3 (AGPL-3.0)",
        packages=find_packages(),
        install_requires=['egoio == 0.2.11',
                          'egopowerflow == 0.0.5',
                          'scikit-learn == 0.19.0'],
  	  dependency_links=['git+ssh://git@github.com/openego/PyPSA.git@dev#egg=PyPSA']
       )
  
new_contents: __copyright__ = "Flensburg University of Applied Sciences, Europa-Universität Flensburg, Centre for Sustainable Energy Systems, DLR-Institute for Networked Energy Systems"
  __license__ = "GNU Affero General Public License Version 3 (AGPL-3.0)"
  __author__ = "mariusves"
  
  
  from setuptools import find_packages, setup
  
  setup(name='eTraGo',
        author='DLR VE, ZNES Flensburg',
        author_email='',
        description='electrical Transmission Grid Optimization of flexibility options for transmission grids based on PyPSA',
        version='0.3',
  	  url='https://github.com/openego/eTraGo',
        license="GNU Affero General Public License Version 3 (AGPL-3.0)",
        packages=find_packages(),
        install_requires=['egoio == 0.2.11',
                          'egopowerflow == 0.0.5',
                          'scikit-learn == 0.19.0'],
  	  dependency_links=['git+ssh://git@github.com/openego/PyPSA.git@dev#egg=PyPSA']
        extras_require={
          'docs': [
              'sphinx >= 1.4',
              'sphinx_rtd_theme']}
       )
  
subject: add extras_require sphinx