Release v0.5.0

[herring101]

概要\n* outline セクション実装\n* README / CHANGELOG 更新

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 92.85714% with 4 lines in your changes missing coverage. Please review.

Project coverage is 83.21%. Comparing base (361d970) to head (a99cee0).

Files with missing lines	Patch %	Lines
src/scanner/mod.rs	87.87%	4 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main      #19      +/-   ##
==========================================
+ Coverage   81.69%   83.21%   +1.52%     
==========================================
  Files          16       17       +1     
  Lines         978     1013      +35     
==========================================
+ Hits          799      843      +44     
+ Misses        179      170       -9     

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