Update external/urxvt-perls
urxvt: map keyboard-select:search to M-a
urxvt: open urls on left-click
.Xresources: use Adwaita mouse pointer
emacs: don't use evil-mode by default
.xsession: don't fail if xss-lock is not available
.xsession: simple 2-screen setup for britany
i3: brighter background for unfocused clients' titlebars
i3: popup_during_fullscreen smart
i3: volume control keybindings for full-size keyboard
i3: use standard vim movement keys; use marks as poor man's "window back and forth"
i3: direct jumps to some applications
emacs: send mails via local sendmail
emacs: a keybinding for mu4e