Minor edits

[sepandhaghighi]

Reference Issues/PRs

What does this implement/fix? Explain your changes.

• PyPI badge bug fixed
• Repo-size badge added
• AUTHORS.md updated
• References updated
• setup.py updated

Any other comments?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.85%. Comparing base (12a9971) to head (0424156).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #113   +/-   ##
=======================================
  Coverage   96.85%   96.85%           
=======================================
  Files           2        2           
  Lines         222      222           
  Branches       24       24           
=======================================
  Hits          215      215           
  Misses          5        5           
  Partials        2        2           

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