5.2新規翻訳: threading_and_code_execution.md
5.2新規翻訳: threading_and_code_execution.md

以下を参照:
- https://github.com/yasslab/railsguides.jp/commit/1f5a37b63a27a8bf20dc75470b291d1560bc2d11

yasslab/railsguides.jp,yasslab/railsguides.jp,yasslab/railsguides.jp,yasslab/railsguides.jp