(split) Add file01.txt and file02.txt
(split) Update after subtree add
Update file01.txt from another repository
Update file02.txt from another repository
Add file03.txt
Add file04.txt
Add 'plugin/' from commit '6d409c679d8b7bcdb83b0e4c414306735629fb37'

git-subtree-dir: plugin
git-subtree-mainline: d6a5d11a2fc27b405e46154e42548d9dacf89e04
git-subtree-split: 6d409c679d8b7bcdb83b0e4c414306735629fb37