  * Auto-populate l10n classes
    + Skip entries with subclasses (assuming custom override)
  * Add Game class
  * Add documentation subclasses e.g. for LibreOffice and Gimp.
  * Figure out if possible to use variables for per-node override:
    + gui-toolkit: gtk/qt
    + desktop-environment: xfce/lxde/gnome/kde
    + locale-en: british/american
    + locale-hunspell-da: myspell/hunspell
    + db: sqlite/mysql/postgres
  * Add READMEs in (sub)classes to document naming conventions etc.
  * Add localegroup NORDIC and fix shrink SCANDINAVIA.
  * Add l10n.all and include in appropriate ...locale.ALL classes.
  * Rename ...locale.ALL → ...locale.WORLD.
  * Implement CLI typewriter setup from
    <http://crunchbang.org/forums/viewtopic.php?pid=368469#p368469>
  * Integrate xfce4-whiskermenu-plugin as xfce subclass.
  * Add power management (sub)class for tlp
  * Use and configure "locales" package (or "locales-all" when suitable)
  * Add class for odd connectivity, e.g. iPhone/GPRS
    + include libusbmuxd-tools
    + include comgt
  * Add class for odd networking protocols
    + include gvfs-backends
  * Add OpenGL subclass for GLES
    + include libgles2-mesa
  * Test script.sh of each node with shellcheck and "dash -n"
