Json package

[raviqqe]

Close #396.

[codecov-commenter]

Codecov Report

Merging #851 (8b5914f) into main (38d3b35) will not change coverage.
The diff coverage is n/a.

❗ Current head 8b5914f differs from pull request most recent head 0757b35. Consider uploading reports for the commit 0757b35 to get more accurate results

@@           Coverage Diff           @@
##             main     #851   +/-   ##
=======================================
  Coverage   84.52%   84.52%           
=======================================
  Files         385      385           
  Lines       39987    39987           
=======================================
  Hits        33800    33800           
  Misses       6187     6187           

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