Squashed 'bundle/vim-simple-todo/' content from commit f228b0e

git-subtree-dir: bundle/vim-simple-todo
git-subtree-split: f228b0ec75d0e2cdd444454d4006089c88d9062c
Merge commit '487ee772754b3a0116029fc0350dd4d72863c91e' as 'bundle/vim-simple-todo'