Uses `git rev-parse --show-toplevel`

...seems like a more lightweight way of providing various settings to
Gtk apps (and maybe other stuff? I'm not sure).

Various other font tweaks and such in this commit.

- messes with DPI & fonts
- changes trayer height
- rewrites chunks of xmonad.hs to use EZConfig style bindings, rofi for
  launcher and i3lock for a lock screen (thanks @benlemasurier), and a
  slightly different set of layouts.  also handles some fancy laptop keys
  like volume adjustment.  still need to steal casey & tyler's stuffs for
  backlight handling, probably.

for now, i'm going to keep these changes in a separate branch rather than
attempt to make them work on all of my systems.  I'm running Debian Stretch
on here and the monitor is giant, so it would likely be a hassle, and it's
small enough that i can probably just manage as a separate branch as long
as needed.

I'm keeping snippets of code and shell transcripts in vimwiki as I work
on things.  Adding syntax highlighting is pretty nice for this.

Also mapped F8 to spit out an ISO-8601 datestamp, which seems useful
for logging times in a diary entry or the like.

Useful for debugging various and sundry keybinding things.  Better this
way because paging through the output of :map by hand is lame.

Makes a world of difference for things like vimwiki.

...one of those scripts that exists purely as a reminder that i can do a
thing.

...this was causing emacs to crash at startup, probably because I'm missing
a font on this system.

...I probably won't use it much, but I'm playing with real org mode over
in emacsland and it's handy to have some support here.

Seems to involve less flailing, at least for this use case.

It turns out that terminals really can't handle a lot of unicode chars
without freaking out.  Better fonts might help; I'm not honestly sure.

This should be a Makefile, and have things in it.

Also adds etc/default/ - I should probably come up with a more rigorous
layout for directories external to home.

Nothing drastic in this commit; just takes care of some little
inconsistencies and quibbles.  Probably breaks a few files with calls to
filter utilities, but those should be easy to fix on a case-by-case basis.
I'm renaming them because there's nothing vim-specific about them.

- move a few aliases to bin/
  - tags -> build-tags
  - extip -> get-external-ip
- rename some utils in bin/
  - vim-filter-* to filter-*
  - vertical to filter-vertical
- remove some bogus stuff from bin/
  - googleearth
  - d (some thing i was messing around with for menus)
  - pup (nice util, but should install elsewhere)
- add a bin/cheat to hang cheatsheet stuff on
- use fzf-tmux for h alias

fzf:

  https://github.com/junegunn/fzf

I'm not 100% sold yet, but it's basically dmenu for the shell.  Much to
recommend.  Adds an improved ctrl-r.

unsorted-unique is just a wrapper around a short awk operation.  I put it
in its own script because quoting things in aliases is hard.

It's neat; it's too opinionated.

This is way primitive, but I think a full-featured version won't actually
be much more code.

I'm still not really sold on this Oh My Zsh business.

History is still kind of weird with this.  Switches to using scd for
directory history.

These will now be subcommands of the wrt tool instead of clogging up the
general namespace for no particular reason.

Sometimes it's good to be reminded what shell you're in.

Kind of silly to have two aliases here, since they use different markers.

Possibly quite slick.

Recording gifs, text-to-speech.

Like zsh's autocd - treat a bare directory name as `cd directory`.

Conflicts:
	home/.vimrc