Update tern to HEAD of master
Add lua-mode via ELPA
Update and add new Leiningen plugins
Comment out guillemet entry key bindings
Add convenienc fn's for running bare Gershwin REPL via Maven
Revert "Remove extra sml-mode"

This reverts commit 322dd2fb2937a13de3febc823972e3f382b34911.
Add convenience function for opening custom Emacs config
Add C-c C-f for sml-send-function