Emacs: Lower flx-ido-threshold.

"On slower machines, it may be necessary to lower flx-ido-threshhold to
ensure a smooth experience."
Emacs: Use projectile.

Because of projectile's configuration, this necessitates removing the
power binding, which was not that useful anyway.
Emacs: projectile-enable-caching.
Emacs: Diminish all the modes!

Move Diminish to the end of the file, and Diminish a minor Magit mode,
Projectile, and Eldoc.
Emacs: Better default Ediff behavior.
Emacs: Use ace-jump-buffer.

(Yes, please!)
Emacs: Homogenize org source blocks.

With capitalization and indentation.
Emacs: Bind ace-jump-buffer-other-window.
Emacs: Neater ace-jump bindings, C-c j.
Emacs: Use ace-jump-link.

Press 'o' in Info or Help pages to jump to a link automatically.
Emacs: Move Diminish.

I moved the Diminish use-package requirement to the "bright and early"
stage of my config, and moved each of the diminishes to their respective
subsections.

Note that eldoc-mode been un-diminished, because I can't figure it out yet.
Emacs: Eldoc upgrade.

Give Eldoc its own package section, and borrow more of Sacha's code to
make it more useful.
Emacs: Extra, more convenient expand-region bind.
Emacs: Extra ace-jump-mode binding.

I think I'll use ace-jump-mode more than just-one-space, which now has
M-S-Space.