Emacs: Docs updates, regularize filling.
Emacs: Create an "Enable" section.
Emacs: Make one TiddlyWiki source block.
Emacs: Remove kill-all-dired-buffers.

As the documentation noted, this function is largely obsoleted by the
in-Dired re-mappings of <return>, ^, and q, located elsewhere in this
config.

As such, it doesn't make sense to spend time evaluating this code-block.
Emacs Org-Mode: Add speed command, k.

Bound to org-cut-subtree.
Emacs Org-Mode: Saner priorities.

This means that the default priority is below A, B, and C, and that
those priorities display intelligently in the agenda.
Emacs Org-Mode: Add org-narrow-or-widen.