emacs: reverting to try to get default theme working
emacs: whitespace, comments
emacs: fix `color-theme` on startup

need to init packages before `init-custom.el` where theme is set, as
themes only applied after `init.el` so don't have the necessary
`custom-theme-load-path` customisation until too late otherwise (i
think).
filladapt: whitespace
filladapt: back to the original
filladapt: whitespace
emacs: more customize tweaks (auto-fill, magit)
emacs: remove out-of-date non-package-managed packages
git: ignore emacs desktop file
emacs: whitespace and comments
emacs: no longer using any unmanaged packages
emacs: elisp doesn't seem to trigger `prog-mode-hook`
emacs: tweak `auto-fill-mode` to be a bit like `fill-paragraph`
emacs: more or less sort out filling, wrapping, etc