Update helm to have upstream's require fixes
Add GNU ELPA's cl-lib backport for older Emacsen
Improve font selection on Debian

This was done by favoring DejaVu Sans Mono over Liberation Mono.
Liberation Mono has too square of an aspect ratio for my liking.
Merge changes from github 'master'
Merge branch 'master' of https://github.com/rdparker/emacs-config