README: link related libraries (issue #40)

[endolith]

Adds related libraries under Similar projects (see issue #40): VMES, IEVS, pref_voting, and exp_soc_util_perf, each in the same bullet style as the other entries (link, attribution, dash-separated blurb with license, voter models where relevant, and method scope).

Follow-up edits: remove a redundant opening paragraph that summarized elsim itself (the README is already about this package), and keep comparisons implicit where helpful (e.g. pref_voting’s profile-centric focus) without restating the whole project.

  

[what-the-diff]

PR Summary

• Enhancements to README.md
  A new section named "Libraries and research code" has been added to the README.md file for better accessibility and understanding of the project.

• Added references to related tools
  Links and short descriptions of useful libraries and research tools associated with voting systems have been added. These include:

  • VMES: A package found in the Julia language built specifically for evaluating voting methods.
  • IEVS: A classic and efficient diagnostic tool or simulator programmed in C. This tool is used for comparative analysis of different voting systems.
  • pref_voting: This is a Python library which features extensive rules for computational social choices, focused on voting systems.
  • exp_soc_util_perf: This is a repository linked to a paper on voting. It comes with Jupyter notebooks and a Streamlit web application for an interactive approach to understand the subject.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.31%. Comparing base (8a7213f) to head (0a53336).

Additional details and impacted files

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  Coverage   96.31%   96.31%           
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  Files          19       19           
  Lines         489      489           
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  Hits          471      471           
  Misses         18       18           

Flag	Coverage Δ
no-numba	95.50% <ø> (ø)
numba	89.16% <ø> (ø)

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