Squashed 'git-subtree/' content from commit d7965e8

git-subtree-dir: git-subtree
git-subtree-split: d7965e88248bd38415e271eee3480394626dd3d6
Merge commit '51d81897b6fc5f25323611960e1d3ddd7d7c3ffb' as 'git-subtree'