Minor edits

[sepandhaghighi]

Reference Issues/PRs

What does this implement/fix? Explain your changes.

• PyPI badge height bug fixed
• Repo-size badge added
• AUTHORS.md updated
• README.md modified
• Document modified

Any other comments?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.69%. Comparing base (eb7b5b8) to head (f5ce267).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev     #584   +/-   ##
=======================================
  Coverage   99.69%   99.69%           
=======================================
  Files          14       14           
  Lines        3187     3187           
  Branches      433      433           
=======================================
  Hits         3177     3177           
  Misses          4        4           
  Partials        6        6           

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