Fixes #3 - Incorrect handling for first comment after function defini…

[inno]

…tion

* Use ast to detect the last line of the last argument, stop
  iterating once we're past it

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 99.42%. Comparing base (2e95115) to head (dd4d66c).
Report is 1 commits behind head on main.

Files	Patch %	Lines
simplecli/simplecli.py	83.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main      #13      +/-   ##
===========================================
- Coverage   100.00%   99.42%   -0.58%     
===========================================
  Files            2        2              
  Lines          334      345      +11     
  Branches        83       85       +2     
===========================================
+ Hits           334      343       +9     
- Misses           0        1       +1     
- Partials         0        1       +1     

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