Specifying versions based on Ignacio Aguirre's recommendations

[kasra-keshavarz]

Addressing #16. Specifying the version of dependencies as following:

    'numpy==1.26.4',
    'pandas==2.2.2',
    'scipy==1.13.1',
    'scikit-learn',  # No specific version specified
    'copulae==0.7.9',
    'matplotlib',    # No specific version specified
    'jupyter'        # No specific version specified

I think some investigation is needed to not necessarily fix the version, but provide a minimum and/or maximum version instead.

[ShervanGharari]

Maybe would be nice, linked to #15, to have tested samples of requirements files for different Python 3.X. The suggested copulae==0.7.9 may cause issues with Python3.8 as it passed the end of life expensentecy.

[kasra-keshavarz]

Feel free to modify the PR if you want these changes.