[core] Rework core implementation

Experimental re-implementation of core functionality with the aim:
- Depend only on the Python Standard Library for core
- If modules are missing elsewhere, *never* throw
- Unit test *everything*
- Cleaner and more minimal implementation
- Better integration points for existing implementations (charts,
  braille, etc.)
- Full backwards-compatibility with existing module system (except where
  modules can be vastly simplified)

bin/load-i3-bars.sh

@@ -1,30 +0,0 @@
-#!/usr/bin/env bash
-
-if [ ! -f ~/.config/i3/config.template ]; then
-	cp ~/.config/i3/config ~/.config/i3/config.template
-else
-	cp ~/.config/i3/config.template ~/.config/i3/config
-fi
-
-if [ -f ~/.config/i3/config.template.private ]; then
-	cat ~/.config/i3/config.template.private >> ~/.config/i3/config
-fi
-
-screens=$(xrandr -q|grep ' connected'| grep -P '\d+x\d+' |cut -d' ' -f1)
-
-echo "screens: $screens"
-
-while read -r line; do
-	screen=$(echo $line | cut -d' ' -f1)
-	others=$(echo $screens|tr ' ' '\n'|grep -v $screen|tr '\n' '-'|sed 's/.$//')
-
-	if [ -f ~/.config/i3/config.$screen-$others ]; then
-		cat ~/.config/i3/config.$screen-$others >> ~/.config/i3/config
-	else
-		if [ -f ~/.config/i3/config.$screen ]; then
-			cat ~/.config/i3/config.$screen >> ~/.config/i3/config
-		fi
-	fi
-done <<< "$screens"
-
-i3-msg restart

bin/pacman-updates

@@ -1,22 +0,0 @@
-#!/usr/bin/bash
-
-if ! type -P fakeroot >/dev/null; then
-	error 'Cannot find the fakeroot binary.'
-	exit 1
-fi
-
-if [[ -z $CHECKUPDATES_DB ]]; then
-	CHECKUPDATES_DB="${TMPDIR:-/tmp}/checkup-db-${USER}/"
-fi
-
-trap 'rm -f $CHECKUPDATES_DB/db.lck' INT TERM EXIT
-
-DBPath="${DBPath:-/var/lib/pacman/}"
-eval $(awk -F' *= *' '$1 ~ /DBPath/ { print $1 "=" $2 }' /etc/pacman.conf)
-
-mkdir -p "$CHECKUPDATES_DB"
-ln -s "${DBPath}/local" "$CHECKUPDATES_DB" &> /dev/null
-fakeroot -- pacman -Sy --dbpath "$CHECKUPDATES_DB" --logfile /dev/null &> /dev/null
-fakeroot pacman -Su -p --dbpath "$CHECKUPDATES_DB"
-
-exit 0

bin/toggle-display.sh

@@ -1,15 +0,0 @@
-#!/usr/bin/env bash
-
-echo $(dirname $(readlink -f "$0"))
-
-i3bar_update=$(dirname $(readlink -f "$0"))/load-i3-bars.sh
-
-xrandr "$@"
-
-if [ -f $i3bar_update ]; then
-	sleep 1
-	if [ -f ~/.config/i3/images/background.png ]; then
-		feh --bg-fill ~/.config/i3/images/background.png
-	fi
-	$i3bar_update
-fi