Improve package management feedback
Improve package management feedback

With quelpa updating fixed, there is a longer delay on package update.
So I added a 'looking for outdated packages...' message, and improved
the formatting of backtraces in debug output.

keoko/.emacs.d,aminb/.emacs.d,hlissner/.emacs.d,keoko/.emacs.d,keoko/.emacs.d,keoko/.emacs.d,hlissner/doom-emacs,hlissner/doom-emacs,keoko/.emacs.d,hlissner/.emacs.d,UndeadKernel/emacs_doom,keoko/.emacs.d,hlissner/doom-emacs,aminb/.emacs.d,UndeadKernel/emacs_doom,hlissner/.emacs.d,hlissner/.emacs.d,hlissner/.emacs.d,aminb/.emacs.d,keoko/.emacs.d,hlissner/doom-emacs,hlissner/.emacs.d,UndeadKernel/emacs_doom,hlissner/doom-emacs,hlissner/.emacs.d,UndeadKernel/emacs_doom,aminb/.emacs.d,UndeadKernel/emacs_doom,hlissner/.emacs.d,UndeadKernel/emacs_doom,keoko/.emacs.d,aminb/.emacs.d,aminb/.emacs.d,aminb/.emacs.d,aminb/.emacs.d,hlissner/doom-emacs,hlissner/doom-emacs,UndeadKernel/emacs_doom