Start using git-gutter+/git-gutter-fringe+ instead of
git-gutter/git-gutter-fringe.
Set up key binding for git-gutter+-show-hunk.

Binding: M-s s d
Mnemonics: "show diff"
Update abbrevs.
Always select *Help* window.

To return point to previous location, I can simply hit `q`.
Make Ido look for file name at point.
Use "long-iso" format for dates in Dired.
Update package list in README.
Start using ztree-dir.