Implement holes and patcher

[kniazkov]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.35%. Comparing base (47f5ca2) to head (fe39e27).
Report is 5 commits behind head on master.

❗ Current head fe39e27 differs from pull request most recent head 7f5c304. Consider uploading reports for the commit 7f5c304 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master      #23   +/-   ##
=========================================
  Coverage     88.35%   88.35%           
  Complexity      337      337           
=========================================
  Files            39       39           
  Lines          1271     1271           
  Branches        202      202           
=========================================
  Hits           1123     1123           
  Misses           82       82           
  Partials         66       66           

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