In work
Squashed 'vendor/use-package/' content from commit 851b6ed

git-subtree-dir: vendor/use-package
git-subtree-split: 851b6edde37cacb57b7f14c69c31f9995b01592c
Merge commit '0d571e06d2562cdd2033411510f299c813defaf1' as 'vendor/use-package'
Switched back from cask to package.el.
Purged emacs-powerline.
Consistent use-package and bind-key adoption.
Emacs state handled in separate directory.