old_contents: from setuptools import setup, find_packages
  
  setup(
      name='udkm1Dsim',
      version='1.4.0',
      packages=find_packages(),
      package_data={
          'udkm1Dsim': ['parameters/atomic_form_factors/chantler/*.cf',
                        'parameters/atomic_form_factors/chantler/*.md',
                        'parameters/atomic_form_factors/henke/*.nff',
                        'parameters/atomic_form_factors/henke/*.md',
                        'parameters/atomic_form_factors/cromermann.txt',
                        'parameters/magnetic_form_factors/*.mf',
                        'parameters/elements.dat',
                        'matlab/*.m',
                        ],
      },
      url='https://github.com/dschick/udkm1Dsim',
      install_requires=['tqdm>=4.43.0',
                        'numpy>=1.18.2',
                        'pint>=0.9',
                        'scipy>=1.4.1',
                        'sympy>=1.5.1',
                        'tabulate'],
      extras_require={
          'parallel':  ['dask>=2.6.0'],
          'testing': ['flake8', 'pytest'],
          'documentation': ['sphinx', 'nbsphinx', 'sphinxcontrib-napoleon',
                            'autodocsumm'],
      },
      license='MIT',
      author='Daniel Schick',
      author_email='schick.daniel@gmail.com',
      description='A Python Simulation Toolkit for 1D Ultrafast Dynamics '
                  + 'in Condensed Matter',
      long_description=open('README.md').read(),
      long_description_content_type='text/markdown',
      python_requires='>=3.5',
      keywords='ultrafast dynamics condensed matter 1D',
  )
  
new_contents: from setuptools import setup, find_packages
  
  setup(
      name='udkm1Dsim',
      version='1.4.0',
      packages=find_packages(),
      package_data={
          'udkm1Dsim': ['parameters/atomic_form_factors/chantler/*.cf',
                        'parameters/atomic_form_factors/chantler/*.md',
                        'parameters/atomic_form_factors/henke/*.nff',
                        'parameters/atomic_form_factors/henke/*.md',
                        'parameters/atomic_form_factors/cromermann.txt',
                        'parameters/magnetic_form_factors/*.mf',
                        'parameters/elements.dat',
                        'matlab/*.m',
                        ],
      },
      url='https://github.com/dschick/udkm1Dsim',
      install_requires=['tqdm>=4.43.0',
                        'numpy>=1.18.2',
                        'pint>=0.9',
                        'scipy>=1.4.1',
                        'sympy>=1.5.1',
                        'tabulate',
                        'matplotlib>=2.0.0'],
      extras_require={
          'parallel':  ['dask>=2.6.0'],
          'testing': ['flake8', 'pytest'],
          'documentation': ['sphinx', 'nbsphinx', 'sphinxcontrib-napoleon',
                            'autodocsumm'],
      },
      license='MIT',
      author='Daniel Schick',
      author_email='schick.daniel@gmail.com',
      description='A Python Simulation Toolkit for 1D Ultrafast Dynamics '
                  + 'in Condensed Matter',
      long_description=open('README.md').read(),
      long_description_content_type='text/markdown',
      python_requires='>=3.5',
      keywords='ultrafast dynamics condensed matter 1D',
  )
  
subject: add matplotlib as dependency for visualization