Full docstrings

[aviadsusman]

full docstrings for all public functions and classes. all others indicated as nonpublic with "_".

[codecov]

Codecov Report

❌ Patch coverage is 98.38710% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 92.04%. Comparing base (ee3030c) to head (8c1b283).
⚠️ Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
eipy/utils.py	92.85%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #60   +/-   ##
=======================================
  Coverage   92.04%   92.04%           
=======================================
  Files           6        6           
  Lines         641      641           
=======================================
  Hits          590      590           
  Misses         51       51           

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