Squashed 'plugin/' content from commit d7fc4bb

git-subtree-dir: plugin
git-subtree-split: d7fc4bb942ca12b483b0001fdb8751a573f0d01a
Merge commit '21c5a3b7f459d1d4448287be367257b1ed512b8a' as 'plugin'
Squashed 'plugin/' changes from d7fc4bb..6d409c6

6d409c6 Add file04.txt

git-subtree-dir: plugin
git-subtree-split: 6d409c679d8b7bcdb83b0e4c414306735629fb37
Merge the latest changes from plugin/master